I’m standing in garage 10 at Donington Park looking at four sets of Michelin tyres lined up against the wall, all destined for the same Mini John Cooper Works and all, to varying degrees, apparently suitable for someone who enjoys driving quickly. Which is really the point of today.
Ask what tyre you should fit for a track day and the internet will provide an answer within seconds. Several hundred answers, normally, many of them completely different and delivered with absolute confidence. Someone will have done 15 track days on a particular tyre and swear by it. Someone else will tell you it is useless because they destroyed a set at Bedford in an afternoon. There will be pressures quoted to half a PSI, probably without mentioning the car, ambient temperature, geometry or whether the person driving has the subtle touch of Jim Clark or treats every corner like the last lap of a BTCC race.
Tyres are one of those subjects where everybody has an opinion because everybody can feel them. The more interesting question is why they feel different, and what happens as you progress from a tyre primarily designed to deal with everything the British road can throw at it to one created with repeated circuit abuse firmly in mind.
Donington is a rather fitting place to find out. Three decades ago, I was sitting somewhere on one of these banks watching Ayrton Senna produce one of the great Formula 1 drives, in conditions where tyre choice, temperature and timing mattered enormously. Today, the East Midlands is enjoying its fourth heatwave of a very hot summer; there isn’t a rain cloud in sight and, importantly, I am not Ayrton Senna. But the principle remains. Whatever your ability, the four patches of rubber connecting the car to the circuit have a fairly significant say in what happens next.
I’ve spent enough years racing and sprinting to have developed an unhealthy interest in tyres and particularly tyre pressures, so Michelin has rather helpfully given me Joe, one of its technical specialists, to spend the day answering questions and, more importantly, dispelling some of the things all of us have heard in paddocks over the years. Before I get the opportunity to bombard him with those, though, the team has fitted the least track-focused tyre of the day: the CrossClimate 3 Sport.
CrossClimate 3 Sport: when an all-season tyre meets Craner Curves
Calling the CrossClimate 3 Sport a winter tyre would be doing it a disservice. It is a performance all-season tyre and carries the 3PMSF snow certification, meaning this is something designed to work through a far broader range of conditions than anything else we’ll drive today. Snow is within its remit. A baking-hot Donington Park and repeated high-load laps through Craner Curves probably sit somewhat further down the design brief. Yet the first surprise is how good it is.
We start every session in the same way. Five or six progressive laps, initially somewhere around six-tenths, building temperature through the tyre and progressively adding braking load and lateral force until the final lap is much closer to nine-tenths. Back into the pits, pressures checked at all four corners and adjusted to give us a consistent reference point before going out again to actually lean on them.
At the beginning, the CrossClimate is quite playful. Turn-in is better than you might expect and there is enough communication through the steering wheel that you can happily hustle the Mini around. If anything, it encourages you because the limit arrives progressively rather than suddenly. What you start to notice under heavier braking is a softness beneath the car, almost like there is a very thin layer of marshmallow between tread and tarmac. You turn the wheel and the car responds, but there is a fractional delay while the tyre loads up underneath you.
That sensation grows as the temperature rises. Through Redgate you can feel the tread moving more, and under heavy braking there is a slight float to the platform that wasn’t there on the first few laps. Then you reach Craner Curves, where the loads build quickly and the car changes direction while still carrying serious speed, and that is where I start asking more of the tyre than it really wants to give. At the beginning of the session I’m carrying decent speed through there. Once everything is properly hot, I start lifting.
There is still grip, but not enough confidence to commit the car in the same way. As the weight moves from one side to the other, the tyre takes longer to settle and there is more movement underneath the Mini. Push harder and it doesn’t suddenly throw you into the scenery, it simply becomes softer, less precise and eventually a little greasy.
Which is exactly what it should do. This is a tyre designed to deal with summer rain, winter cold, snow and thousands of road miles, not repeated high-temperature punishment around Donington. What is remarkable is how long it remains entertaining before the heat gets on top of it.
You are unlikely to deliberately arrive at a dry track day in a heatwave with the CrossClimate 3 Sport as your performance choice, but plenty of people arrive at their first track day in whatever happens to be fitted to the car. The useful lesson is that you can absolutely go out, learn the circuit, understand the car and have fun. Modern tyre technology has reached the point where something snow-certified can be driven surprisingly hard on a circuit before it finally waves a small white flag.
The Mini also needs this set later in the week, so rather than turning them into four expensive black doughnuts we call time while there is still plenty of life left in them. Next up is where things start getting more serious.
Pilot Sport 5: the point where road tyre meets track-day ambition
I see Pilot Sports on track days all the time. Pilot Sport 3s, 4s, 5s, various generations fitted to everything from hot hatches to 911s, and they are regularly recommended on forums as a good tyre for someone wanting to use the same car on road and circuit.
The Pilot Sport 5 is very much a high-performance road tyre, though, and that distinction matters. While the team is fitting them I finally get onto tyre pressures with Joe. His starting point is almost disappointingly simple: use the recommended pressure for the car. I can already hear a thousand internet keyboards firing up.
Obviously, once you have experience, tyre pressure becomes another way of tuning the behaviour of the car. I do exactly that in racing. You can change balance, response and how quickly a tyre comes into its operating window with remarkably small adjustments. But the important bit, particularly if you’re new to track driving, is that there is no magical universal track-day pressure that somebody on a forum can give you.
The correct pressure depends on the tyre, the car and what the tyre was designed to do. So again we go through the same process. Progressive laps, bringing the carcass up to temperature, increasing the load rather than leaving the pit lane and immediately attacking Redgate like qualifying finishes in four minutes. When we come back in Joe reads the pressures out while I sit in the Mini. The CrossClimates had gained around 3psi at the rear and 1psi at the front. That rear increase doesn’t particularly surprise me because I spend a lot of time persuading front-wheel-drive cars to rotate from the back. More interestingly, the Pilot Sport 5 shows a very similar rise.
Initially that seems surprising because the two tyres feel so different, but start looking beneath the tread and it makes more sense. There is shared Michelin thinking in the construction, then changes in tread, compound and stiffness move each tyre towards a different job. On circuit, the PS5 is an immediate and substantial step forward. The softness has gone. You can place the front of the Mini much more accurately and, crucially, there is a firmer platform underneath you when you ask the suspension to take a big load.
That confidence becomes particularly obvious under braking. You can hit the pedal harder, keep braking deeper towards the corner and then start blending the brake release into steering input without feeling the tyre squirm underneath you. Redgate becomes cleaner. The Old Hairpin becomes somewhere to play with the balance rather than simply manage it. There is still noise. Push through the Old Hairpin or Redgate and the fronts will squeal in protest, but there is much more definition in what they’re telling you. And for a novice track-day driver, I think this is an important point. The PS5 is brilliant at eight-tenths.
If you are still learning lines, braking points and how a car moves underneath you, you could spend a long time on this tyre and never feel it is holding you back. It gives enough grip to enjoy the car, enough communication to understand what you are doing and it remains a proper road tyre when you leave the circuit that afternoon. But keep pushing and eventually you find the compromise.
As the session gets longer and the loads increase, the steering starts losing some of that initial clarity. You turn in harder, ask more from the outside front and begin to feel the surface of the tyre giving up precision. It doesn’t suddenly stop gripping, but you are now working the tyre harder than its design priority really allows. You get more movement, more heat and eventually less feel.
I tell Joe I’d normally add a little rear pressure at this point to wake the back of the MINI up and give myself some more rotation on entry. He smiles and effectively tells me to behave for another session. This is still the road tyre. We can start messing about when we get to something designed with circuit work in mind.
And that really sums up the PS5. Can you use it on track? Absolutely. Is it a track tyre? No. If you’re new, or simply want to enjoy your road car on circuit a couple of times a year without turning tyre choice into another hobby, you may not need anything else. But as your confidence increases and you start carrying more braking force, more corner speed and more energy through the tread, the demands you place on the tyre change. The tyre almost needs to progress with the driver. Which brings us to the Pilot Sport 4 S.
Pilot Sport 4 S: now we can start playing
The 4 S is interesting because this is the point at which Michelin deliberately starts mixing the two worlds. Michelin describes it as roughly an 80 per cent road, 20 per cent track tyre, which makes a lot of sense when you drive it back-to-back with the PS5.
Joe shows me an email from a customer claiming more than 1,000 track miles and 12,000 road miles from a set without wearing them out. I have no idea what the car was, what circuit those miles were on or whether those track miles were conducted at Senna pace or behind a safety car, so treat that as anecdote rather than science. But it does tally with my general experience of tyres. Grip, longevity and price exist on a sliding scale, but good tyres are rarely just about ultimate grip for three heroic laps.
The 4 S is also our first proper bi-compound tyre of the day. The inner and outer sections of the tread have different jobs, with the outside designed to deal with the loads generated in dry cornering while the inner section helps with wet performance. The construction is more supportive too, which matters because the outside shoulder is where I’m spending an increasingly large portion of my time. And on track, it is another immediate step.
The thing that strikes me first isn’t one dramatic increase in grip. It is how much longer the tyre keeps giving. With the PS5 you eventually reach the point where adding steering, braking or speed simply creates more heat and less precision. The 4 S lets you keep leaning on it. Brake later, turn while still trailing some pressure off the pedal, load the outside front and it accepts the extra demand rather than smearing across the surface.
The speed starts creeping up almost without you noticing. That is often the mark of a genuinely good performance tyre. It doesn’t necessarily make the car feel dramatically faster, it just removes little moments where you previously had to wait. You can get back to the throttle earlier. You can carry another few mph into a corner. You don’t need the tiny confidence lift through a direction change because the tyre has already settled.
There is still a limit. Push the MINI hard enough and eventually the front starts washing towards understeer, but even then the tyre remains usable. You feel it beginning to go, adjust the steering or throttle and the front claws its way back rather than simply falling off the edge of the grip curve.
Now Joe allows me to start playing. The Mini is completely standard, so there are no dampers to click, anti-roll bars to adjust or geometry settings to change. Outside of driving style, tyre pressure is effectively my chassis tuning tool for the day. I want a little more movement from the rear, so we add a couple of PSI at the back. The difference is small but obvious. On turn-in the rear is more willing to rotate, which helps point the nose towards the apex rather than asking the front tyres to do all the work. Through Coppice the car will hold a cleaner line, and into the Old Hairpin I can feel the rear helping the front rather than merely following it.
This is where pressure becomes fascinating, because it never stays still. We are running in serious summer heat, pushing a road car hard for repeated laps. The tyres are constantly taking energy from braking, cornering and acceleration and converting it into heat. After another ten hard laps I can feel some of the rotation disappearing again. The car is gradually moving back towards neutral.
Back into the pits and the gauges confirm what my backside has already told me. The pressures have moved. That relationship between temperature and pressure is something worth understanding before disappearing into internet folklore. I tend to think of a tyre almost like a fluid system. Not literally, obviously, but as a useful mental model. Put more energy into it and everything moves. The carcass changes temperature, pressure rises and the way the tread presents itself to the road changes with it.
Which brings me to another paddock favourite. “If it rains, do you raise or lower the pressures?” Joe’s answer is neither. Or, more accurately, there isn’t a universal answer. You run the tyre at the pressure it needs to work correctly. Simply changing pressure because somebody once told you lowering it opens up the tread blocks, or raising it somehow cuts through standing water, risks taking the tyre away from the shape and operating condition it was designed to run in. The worst thing you can do, in Joe’s view, is deliberately run a tyre at the wrong pressure in pursuit of a generic theory. Another small piece of paddock wisdom gently placed in the bin. Now we get to the serious one.
Pilot Sport Cup 2: when the tyre stops being the limiting factor
The Pilot Sport Cup 2 is the tyre in this line-up that makes no secret about where its priorities sit. It is road legal, but the design is heavily biased towards circuit use, with a more aggressive footprint, stiffer construction and Michelin’s Multi-Compound approach across the tread. The outside is there to deal with serious cornering load, and the tread blocks are designed to resist the movement that starts becoming obvious when you abuse a more road-biased tyre for long enough.
For the first run we deliberately go back to the same baseline pressures rather than immediately applying my preferred rear adjustment. I want to know what the tyre itself changes. Again, the first few laps are progressive. Initially the strange thing is how familiar everything feels. The Cup 2 doesn’t suddenly transform the MINI into a GT4 car. Steering effort is similar. The balance is similar. The way the car talks to you is similar to the 4 S.
Then I notice the rev counter. Through McLeans I’m suddenly much closer to the limiter in third. Rather than hanging onto the gear I start pulling fourth. Same corner. Same car. Same driver. Similar feeling. More speed. That, for me, is one of the most interesting things about the whole day. The progression through the tyre range is not four completely different personalities. It is almost evolutionary. Each tyre retains enough of the same basic DNA that the car remains recognisable, but the point where the tyre says “that’s enough” keeps moving further away.
On the Cup 2 you can brake harder and maintain the shape of the tyre. You can turn in with more load still on the front axle. You can ask the outside shoulder to take more lateral force without feeling the tread start to walk around underneath you.
So we set the pressures where I want them and go again. Now the MINI really starts moving. With the rear a little more active I can rotate it into the Old Hairpin, get the nose settled and drive through rather than waiting for understeer to disappear. McLeans becomes a gear higher. I’m carrying more speed in places where, earlier in the morning, the CrossClimate had me considering a confidence lift.
And because the tyre is staying underneath me, I can concentrate on details. Where exactly I release the brake. How quickly I open the steering. Whether I can take another half a metre of road on entry to improve the exit. These are the little things you stop working on when the tyre itself is moving around because part of your brain is always managing the grip underneath you.
Eventually we find another limit. It just isn’t the tyre. After six or seven hard laps the Mini is getting hot. Properly hot. There is that unmistakable smell you get from a standard road car being asked to spend rather too long pretending it is a racing car, and the temperatures elsewhere in the package are becoming more relevant than the four bits of Michelin rubber. Which is another lesson in itself.
Putting the most track-focused tyre you can find on a standard car does not magically make the rest of the car track-focused. More grip means more corner speed, more braking energy and more load through everything else. Brakes, cooling, suspension and even the driver now have to keep up. On the Cup 2, we have reached the point where the tyre is better than the car. That doesn’t make it the automatic winner. It actually proves the point of the day.
So which tyre should you use on track?
The obvious conclusion would be that the Cup 2 is the best because it allowed me to drive the fastest. But that rather misses everything we have spent the day learning. The correct tyre is the one that matches what you are asking from it.
If you are doing your first track day in the car you drive to work on Monday, you do not necessarily need to arrive on the most aggressive track tyre available. A good road performance tyre allows you to learn braking points, lines and weight transfer at speeds where you still have some brain capacity left to process what is happening. The Pilot Sport 5 gives plenty of grip and, perhaps more importantly, lets you feel when you are beginning to ask too much from it.
For someone who has more experience, drives regularly on circuit but still needs the car to deal with motorway miles and British weather, the 4 S moves the compromise significantly towards track performance without completely abandoning road use. You can lean harder on it, work the car for longer and start using pressures as part of the setup rather than simply something you checked at the petrol station that morning.
Then you reach something like the Cup 2, where the tyre is ready to accept much bigger loads and maintain its performance over repeated hard laps. But now you need the car, and yourself, to be ready for what that extra grip brings. That is perhaps the bit missing from many discussions about track tyres. Tyre choice shouldn’t simply be a shopping list ranked by ultimate grip. It should be part of the progression of the car and the driver.
One of the joys of a track day is learning what happens as you get closer to the limit. You begin by discovering where the circuit goes. Then where the car wants to go. Eventually you start understanding what each individual axle and tyre is doing underneath you.
At Donington the difference between our four sets of tyres was not simply how fast I could drive through Craner Curves. It was how much information I received while doing it, how accurately I could place the car and how consistently the tyre allowed me to repeat the same thing lap after lap.
The CrossClimate eventually softened and moved as the heat overwhelmed the compromise required from an all-season tyre. The Pilot Sport 5 gave the car a much firmer platform but eventually started to fade when asked to live permanently beyond its road-focused brief. The 4 S kept the precision for longer and gave me enough consistency to start tuning the balance of the car around it. And the Cup 2 simply kept accepting more until something else in the Mini became the limiting factor.
Four tyres. Same car. Same circuit. Same idiot behind the wheel. Completely different experiences. And perhaps next time somebody tells you that the tyre they use is definitely the best track-day tyre, the first question shouldn’t be what pressure they run it at. It should be what they actually want that tyre to do.
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