Tyre shoulders question

[LPC6]

Just finished a track day this week (relatively new comer to the track). I saw my tyres looking like this and decided to finish the day. The day started with a 2 or 3 spots looking like thataround the tyres, but not all the way around and I thought I could get another full day out of the tyres. But when it looked like that, I called it a day.

Just wanted to get people's views on whether I can keep running on these or they need to be replaced now?

And if I decide to leave my camber the same, are there tyres that are good for the track and road, but will be more durable on the sides.

Any opinions are welcomed!

Here's a pic:

[BertBert]

Can't give specific advice for track day tyres, but get those replaced asap if you are going to use the car! You'd be nuts not to.

[LPC6]

BertBert said:

Can't give specific advice for track day tyres, but get those replaced asap if you are going to use the car! You'd be nuts not to.

Thought as much, thanks for the confirmation! Will be driving the SUV till I get new tyres on this

[Mr MXT]

It is not just some scrub on the shoulder and pick up across the thread width?

I can’t tell from the photos.

What car is it and what pressures were you running?

[LPC6]

Here are some more pics, they look like cuts in the tyre rather than scrub.

It's a 981, running 32 PSI when cold and between 35-36 on the track. Camber is standard (0)

They're Goodyear Eagle F1s, 20" wheels

[thebraketester]

Yeah, those are fked

[Fishlegs]

Date stamp on the sidewall is 03-17. 3.75 years old. Might explain why they didn't take to well to the heat?

[Mr MXT]

LPC6 said:

Here are some more pics, they look like cuts in the tyre rather than scrub.

It's a 981, running 32 PSI when cold and between 35-36 on the track. Camber is standard (0)

They're Goodyear Eagle F1s, 20" wheels

Ah... I concur they’re end of life!

[LPC6]

Any opinions on what tyres I should replace them with?

Should I be sizing down to 18s or 19s? I had read somewhere that 20s may be a bit big for the track? I can pick up a set of 18" wheels with tyres on ebay for a little bit more than the cost of replacement of these tyres.

[thebraketester]

AD08R are very good on both road and track. Perfect crossover tyre

[LPC6]

Thanks, will look into those. Also reading up about camber adjustments!

[HustleRussell]

Your tyre pressures seem low to me

[Boggo]

I agree with the age of the tyres (could tell before you even see the date stamp - 0317 is the 3rd week in 2017)

Get a nice fresh set and if you get a chance ask to check the dates on them before they fit to get the youngest ones you can

[Zarco]

HustleRussell said:

Your tyre pressures seem low to me

Really?

[LPC6]

The pic in the first post is indeed low(er) tyre pressure. That would be around 30 PSI.

The subsequent post with the two pics are when they were hot off the track. They run around 36 PSI when hot on the track.

[HustleRussell]

Zarco said:

HustleRussell said:

Your tyre pressures seem low to me

Really?

Yeah for a 35 profile tyre on what is a relatively heavy car.

[nickfrog]

LPC6 said:

It's a 981, running 32 PSI when cold and between 35-36 on the track. Camber is standard (0)

My friend runs 18' NS2Rs on his 981. They're brilliant as the stiffer sidewall and construction protects the shoulder. AD08r would achieve the same but are a bit more expensive. He paid £400 for 4 NS2r in the correct OE size too.

[LPC6]

nickfrog said:

My friend runs 18' NS2Rs on his 981. They're brilliant as the stiffer sidewall and construction protects the shoulder. AD08r would achieve the same but are a bit more expensive. He paid £400 for 4 NS2r in the correct OE size too.

Thanks for the tip. I just picked up a set of 18s on ebay as I need a set that have been somewhat worn in for a day book at Brands in Dec. Seem to have more options at 18 and they were cheap.

[nickfrog]

LPC6 said:

Thanks for the tip. I just picked up a set of 18s on ebay as I need a set that have been somewhat worn in for a day book at Brands in Dec. Seem to have more options at 18 and they were cheap.

Tyreleader were giving away those 45 series 18' NS2Rs recently. Around £90 IIRC.

[Nickjd]

It is nothing whatsoever to do with age of tyre. You have simply worn through the tread layer on the shoulder and it is now peeling off. You are running on the capping layer and very obviously the tyre needs to be replaced. Road car will roll onto the shoulder more easily . Modern high performance road tyres have very little rubber on the shoulder and the only way you are going to delay that with the current set up is to put serious pressure in the tyre.