Semi-slicks for road use

Semi-slicks for road use

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Discussion

ian_uk1975

Original Poster:

1,189 posts

209 months

Tuesday 14th November 2023
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Has anyone here driven Nankang AR1's on the road? Wondering how they would be for dry weather weekend use? I know about the NS2R's, which are probably better-suited to road use, but I could really do with the extra grip of the AR1's. The car will only be driven in dry weather, but, due to the great British weather, it's possible I could be caught-out in a shower, so the tyres have to be usable (ie. not dangerous if driven sensibly and conservatively) in wet conditions.

charltjr

284 posts

16 months

Tuesday 14th November 2023
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Yes, they’re fine for a bit of road use in warm weather. I had them on an E46 M3 to drive to and from trackdays on.

Aquaplaning resistance is not good, but I was caught out by an unexpected torrential downpour and even on the motorway they were no problem, I just kept my speed down to HGV levels.

They do thrum though, a very noisy tyre.


CKY

1,928 posts

22 months

Wednesday 15th November 2023
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sunnyb13 said:
awful in the wet if I'm honest, probably best to stick with a street performance tyre like pilot sport 4S
IME AD08Rs were quite good at dealing with standing water, I recall 'making progress' in the outside lane of the M4 during a deluge in my old track E36, even at 80+mph I was surprised how they were shrugging off sizeable puddles.

seiben

2,367 posts

141 months

Wednesday 15th November 2023
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I'd recommend Yoko AO52s if you want a good semi-slick that won't completely lose its head in the wet. They still wont have the aquaplaning resistance of something like a PS4/PS4S, but they're surprisingly capable in the wet.

Paul_M3

2,417 posts

192 months

Wednesday 15th November 2023
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Have you looked at the new Yokohama AD09?

Tegiwa's tyre test video suggests it's an Nankang AR-1 match in the dry, but it looks like it would deal with wet conditions better.

Decky_Q

1,656 posts

184 months

Wednesday 15th November 2023
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I had the nankangs on my ordinary road car to try and reduce the understeer. They are very noisy, lasted about 6 months of normal driving and I had to replace both wishbones not long after due to absolutely destroyed bushes. May not be related but car only had about 40k miles so shouldn't have needed bushes so soon imo the two may be related as the slip from factory understeer was definitely gone with the nankangs so I think the bushes were pushed alot harder than standard. They handled the rain fine.

Should be excellent for a track car with polubushes.

anonymous-user

61 months

Wednesday 15th November 2023
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ian_uk1975 said:
Has anyone here driven Nankang AR1's on the road? Wondering how they would be for dry weather weekend use? I know about the NS2R's, which are probably better-suited to road use, but I could really do with the extra grip of the AR1's. The car will only be driven in dry weather, but, due to the great British weather, it's possible I could be caught-out in a shower, so the tyres have to be usable (ie. not dangerous if driven sensibly and conservatively) in wet conditions.
Why on earth would anybody need semi slick track day tyres on the road for "the extra grip".

You do not sound like the sort of person I would like to share the road with.


bigothunter

12,199 posts

67 months

Thursday 16th November 2023
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Joey Deacon said:
ian_uk1975 said:
Has anyone here driven Nankang AR1's on the road? Wondering how they would be for dry weather weekend use? I know about the NS2R's, which are probably better-suited to road use, but I could really do with the extra grip of the AR1's. The car will only be driven in dry weather, but, due to the great British weather, it's possible I could be caught-out in a shower, so the tyres have to be usable (ie. not dangerous if driven sensibly and conservatively) in wet conditions.
Why on earth would anybody need semi slick track day tyres on the road for "the extra grip".

You do not sound like the sort of person I would like to share the road with.
You need AR-1s for all that cornering at 1.2g hehe

Chuck328

1,588 posts

174 months

Friday 17th November 2023
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As ( I believe most ) semi slick need a bit of heat to work properly, is there any point against a good performance street tyre on the road? Can’t be much in it unless you really are pushing on a quiet back road ?

4Q

3,478 posts

151 months

Friday 17th November 2023
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I manage grip ok in a 500+bhp rwd car on Michelin PS4, I can’t imagine why you would need more grip in road conditions even when pressing on unless your driving technique is poor.

grudas

1,339 posts

175 months

Friday 17th November 2023
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got zeknova semi slicks on mine and drive it in all weathers.. torrential rain including. As long as you're aware that you're on semi slicks and "find" it's limits you'll be fine..

they're harder and louder basically.

I'm in a honda s2000 too so it does bite often.

QBee

21,413 posts

151 months

Monday 20th November 2023
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Lighter car (TVR).
I used Toyo R888R for the dry on trackdays, and Uniroyal Rainsport 3s or 5s for the wet.
IMHO, the Uniroyal are an excellent road tyre, really grippy, I have them on both my TVR and my Saab Turbo.
A Porsche driving friend swears by PS4s, and I value his opinion

Kev_Mk3

2,941 posts

102 months

Monday 20th November 2023
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Just get something like a PS4S or cup 2 rather than a semi slick. Anything nankang in the wet you need life insurance.

brillomaster

1,396 posts

177 months

Tuesday 21st November 2023
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the main drawback with semi slicks on the road is that they are noisy, super stiff, and wear very quickly. and they need heat in them to work properly. the first three are not really a concern for a sportscar, but getting heat in semi slick tyres on the road will be tricky.

have you considered something like an accelera 651 sport xtra? you'd need the lowest treadwear rating possible so they heat up quickly, think of hillclimb tyres which need to work well from cold.

as for standing water, you've already said you're unlikely to be caught out in the rain - so just be aware that the slicker the tyre, the less aquaplaning resistance you'll have. so much so that you might be cruising along motorways at 50mph. but its no different that using summer tyres in snow, just drive to the conditions. but, any road legal semi slick tyre will have some grooves to disperse water, otherwise it wouldnt be road legal.

LennyM1984

764 posts

75 months

Tuesday 21st November 2023
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brillomaster said:
but getting heat in semi slick tyres on the road will be tricky.
This!

I have used both semi-slicks (R888Rs and AR1s) and full slicks (showers during races) on a damp track and they are absolutely fine... if they are warm/hot. The issue on the road is that you will struggle to get them hot even in the dry. In the cold/damp, it will be next to impossible and they will be horrible to drive on (in my experience, they will be very snappy).

As others have said, a decent high performance road tyre (PS4S etc) will be a safer bet.

bigothunter

12,199 posts

67 months

Tuesday 21st November 2023
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LennyM1984 said:
brillomaster said:
but getting heat in semi slick tyres on the road will be tricky.
This!

I have used both semi-slicks (R888Rs and AR1s) and full slicks (showers during races) on a damp track and they are absolutely fine... if they are warm/hot. The issue on the road is that you will struggle to get them hot even in the dry. In the cold/damp, it will be next to impossible and they will be horrible to drive on (in my experience, they will be very snappy).

As others have said, a decent high performance road tyre (PS4S etc) will be a safer bet.
In recent times, we have run R888Rs and AR-1s on circuits. They must be above threshold temperature to work properly.

Pilot Sport 4s (or similar) will provide more grip in almost all conditions on road. Getting semi-slicks hot enough and maintaining temperature is next to impossible. But they look racy if that matters.

C70R

17,596 posts

111 months

Tuesday 21st November 2023
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Couldn't agree more with most of the advice here.

I swapped between R888Rs and PS4s on my old track car (wet/dry), and once drove an hour home from the track on my R888Rs because I was too tired to change them.

Two things immediately became apparent:
1. The noise. If you'd told me I had 4 wheel bearings out, I would have easily believed you.
2. The grip. As others have pointed out, without heat and/or on damp roads they behaved like Linglongs.

I immediately swapped them back, and I can't imagine any world where I'd want to run that kind of tyre regularly on the road. The modern generation of high performance road tyre is an astonishing thing. I run Eagle F1 6s on my current track car, and they manage to take a pasting on track and deal with standing water without causing puckering.

ian_uk1975

Original Poster:

1,189 posts

209 months

Tuesday 21st November 2023
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Thanks for all the feedback guys. Putting the power down in a RWD car with 800bhp is quite a challenge, hence why I began thinking about semi-slicks.

I've actually just had delivered a pair of 305/35 R19 PZero PZ4s with a 160 treadwear rating, so hoping they do a decent job. The deal on them was too good to pass up.

Tye Green

793 posts

116 months

Tuesday 21st November 2023
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C70R said:
and once drove an hour home from the track on my R888Rs because I was too tired to change them.

Two things immediately became apparent:
1. The noise. If you'd told me I had 4 wheel bearings out, I would have easily believed you.
2. The grip. As others have pointed out, without heat and/or on damp roads they behaved like Linglongs.

......and I can't imagine any world where I'd want to run that kind of tyre regularly on the road..
in the world of kit cars which are used on warm and dry days such tyres are the norm

bigothunter

12,199 posts

67 months

Tuesday 21st November 2023
quotequote all
Tye Green said:
C70R said:
and once drove an hour home from the track on my R888Rs because I was too tired to change them.

Two things immediately became apparent:
1. The noise. If you'd told me I had 4 wheel bearings out, I would have easily believed you.
2. The grip. As others have pointed out, without heat and/or on damp roads they behaved like Linglongs.

......and I can't imagine any world where I'd want to run that kind of tyre regularly on the road..
in the world of kit cars which are used on warm and dry days such tyres are the norm
For performance or posing? scratchchin