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Road Legal Semi-Slicks - AI Generated Research...



sub

ClioSport Club Member
  RS200
Aloha,

I'm fortunate to have access via work to some 'deep research' models which involve much more processing - you ask a query, and come back later to get the results. I've had stuff run an hour, and it's really comprehensive.

I'm in the market for some new rubber, so figured I'd get it on the case and see how it fared. I'd be interested in anyone wanting to argue against it - I'll let you know what it says ;-)

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Mid-Range Semi-Slick Track Tyres (215/45 R17) for Renault Clio RS 200


Overview: For a Renault Clio RS 200 used ~90% on track (with separate wet tyres already available), the ideal tyres are road-legal “semi-slick” track day tyres that maximize dry grip and heat tolerance while offering reasonable longevity for amateur track days. We focus on mid-range options (avoiding top-tier premium pricing) that deliver excellent performance per pound. Below is a comparison of some of the best mid-range track-oriented tyres in 215/45 R17, including estimated UK prices, key performance traits, road legality, and links to UK retailers.

Comparison Table: Mid-Range Road-Legal Track Tyres (215/45 R17)


Tyre ModelEst. Price (each)Notable Performance Traits (Dry Grip, Heat, Wear)UK Road-Legal?Available from (UK Retailer)
Accelera 651 Sport(200TW compound) Option: 651 Sport XTRA(100TW)~£80 (200TW version) ~£90 (XTRA version)Good budget track tyre. Medium semi-slick compound focused on grip and control . Delivers consistent performance at an affordable price (designed to “break lap times, not the bank”) . The 200TW version offers solid dry grip with decent longevity, while the softer “XTRA” 100TW version provides more ultimate grip at the expense of faster wear. Users report the harder 651 lasts well but with slightly less grip than pricier rivals . Suitable for driving to the track and lapping, without needing a swap.Yes – MSUK List 1B approved (street legal) . E-marked for road use.Tire Streets UK – e.g.Accelera 651 Sport 215/45R17
Federal 595 RS-PRO(200TW)~£85Balanced performance & value. Successor to the popular 595 RS-R, it features a harder ~200 TW compound (the older 140 TW version was discontinued) . This yields good longevity and heat tolerance (able to handle multiple hot laps without falling apart) and a great price-to-performance ratio . Dry grip is solid (though not as sticky as premium R-compounds), and wet grip is acceptable for a semi-slick . It’s known to be relatively durable (“wears like iron” for a 200TW tire) and even quieter than its predecessor . Overall, a cost-effective track tyre that won’t overheat quickly, ideal for consistent lap times in a lighter car.Yes – EU R117certified street tyre (fully road legal).Autodoc – e.g.Federal 595 RS-PRO 215/45R17 91W(summer)
Nankang AR-1 (80 TW rated)~£150 (≈£130–£160) eachHigh-grip track specialist. An “out-and-out” semi-slick that offers phenomenal dry grip on track – many drivers find it nearly on par with top-tier tyres like Toyo R888R . It warms up within a lap or two and maintains grip well even when hot . The AR-1 is used as a control tyre in several race series (e.g. M3 Cup, Civic Cup) due to its performance consistency . In 17″ sizes it features a Kevlar lining for stability at high speed . Trade-offs: It is quite noisy on the road (a loud hum while coasting) and not recommended for standing water. Tread life is moderate (softer compound), but acceptable for amateur use given its extreme grip. Overall, a mid-priced track tyre delivering near-race slick performance .Yes – E-markedand MSUK List 1B (road legal) . (Designed for track, but MOT legal for road use).Demon Tweeks – e.g.Nankang AR-1(215/45R17 91Y)
Nankang NS-2R(180 TW “Street” compound)~£120–£130 eachBest value endurance track tyre. The NS-2R is known as an extremely good tyre “for the money” – it’s the cheapest here and a favorite in club motorsport series. It isn’t the absolute fastest in dry grip, but it is one of the most consistent and durable performers . It’s a true endurance option that can last many track days with consistent lap times . Sidewalls are very stiff, giving sharp handling but a harsh ride . On track, grip is respectable (just a notch below AD08R level ), and it resists overheating well. It also performs surprisingly well in the wet for a semi-slick , boosting confidence if you get caught in rain. Downsides are mainly noise – it’s known to make a loud whine on road (many users thought a wheel bearing failed!) . Overall, the NS-2R is a highly recommended budget track tyre that trades a bit of ultimate pace for longevity and price.Yes – Road legal(EU labeled) . Standard 180TW “Street” version is MSUK List 1B approved. (Note:Nankang also offers softer NS-2R compounds ~120TW marked “Motorsport Use Only” that are notroad legal – ensure you get the street version).TyreLeader – e.g.Nankang NS-2R 215/45R17 91W (XL)
Yokohama Advan Neova AD08RS(≈200 TW)~£140–£145 each (inc. fitting)Ultimate road/track all-rounder. The AD08RS is the updated version of the famed AD08R, engineered for track day enthusiasts who also drive on the street. It delivers superior handling with quick steering response and clear feedback . Dry grip is very strong (close to semi-slick levels) and remains consistent over a session thanks to its robust construction. It also offers top performance in wet conditions compared to others here – its aggressive tread cuts through water, reducing aquaplaning and giving shorter wet braking distances . The compound is slightly harder than the old AD08R (to meet EU regs), which actually increases tread life (a plus for amateurs) while only marginally reducing grip. It’s quite noise-refined for a track tyre and can be daily-driven. Overall, the AD08RS is the priciest of this mid-range set but excels as a dual-purpose tyre – great if you drive to circuits and want confidence in all weather .Yes – Fully road legal (ECE R117compliant). Designed as a street-sports tyreusable on public roads and track .Blackcircles – e.g.Yokohama Advan Neova AD08RS215/45R17
Zestino Gredge 07R(Medium Compound TW240)~£110–£115 each“Bang-for-buck” track performer. The 07R is a Japanese-designed, value-oriented semi-slick aimed at track day and drift use. It is often praised as the **“ultimate value” tyre, offering performance similar to premium brands at a fraction of the cost . Dry grip is impressive for the price – on par with or even better than some more expensive 200TW tyres – and it handles heat cycles well. The medium TW240 compound emphasizes longevity; drivers report it can withstand multiple track days with consistent performance. It’s also versatile enough for drifting (strong shoulder blocks). In wet conditions it’s not as effective (minimal tread), but that’s expected for this category. Overall, Zestino 07R is a serious contender for budget track enthusiasts, delivering superb performance-per-£.Yes – Road legal(E-marked) . FIA/MSA List 1B approved (2019–2021) . In other words, safe for highway use when needed.AJU Motorsport – e.g.Zestino Gredge 07R Medium 215/45R17
Notes: All the above options are street legal in the UK (they carry the required “E” mark and/or appear on Motorsport UK’s List 1B for road-legal track tyres). They prioritize dry grip, so caution is advised if caught in heavy rain (the AD08RS and NS-2R offer the best wet capability of the group , whereas the others should be avoided in standing water). Each tyre’s pricing is an estimate per tyre (VAT included) for 215/45 R17 – actual prices may vary by retailer and stock.

Recommendations


For maximum dry performance on track with a mid-range budget, Nankang AR-1 stands out – it’s very close to premium-tier grip at a lower price, albeit with shorter lifespan and road noise. If you want the best longevity/cost ratio, the Nankang NS-2R or Federal RS-PRO are excellent – they won’t set the fastest lap, but will last multiple track days consistently . Drifters or those seeking a bargain should consider Zestino 07R or Accelera 651 Sport, which deliver shockingly good performance for their cost . And if you occasionally drive on the road or might face rain, the Yokohama AD08RS offers the best all-weather versatility without needing a tyre swap . All these tyres offer a strong performance-to-cost ratio, making them well-suited to spirited track day use in a Clio RS 200 without paying premium prices. Each option above can be purchased online in the UK via the provided retailer links for convenience.
 

182Trev

ClioSport Club Member
  Clio RS182
Interesting AI research, personally I wouldn't call AR-1 or R888R budget tyres (depends on your thoughts on what is budget and premium).

Over the years I've used on track and road (mainly to / from trackday's), R888R, Federal RS-R, AR-1 and AD08-RS.

In my experience AR-1 are slightly better than R888R at around a similar price and I'd choose the AR-1 nowadays where budget allows (and I've ran R888R's for years on track, till my brother fitted AR-1's to his Caterham copy kit car).

As for the AD08RS, they are actually really poor in my opinion, have some fitted to my Mini JCW R56 (came with car, but newly fitted), they melt really easily and lose grip quite quickly, wouldn't recommend them myself.

The RS-R are a great budget tyre, especially for road use and some track time, and are only a bit behind the R888R in withstanding over heating and grip levels.

Saying that, about to bolt some Zestino Gredge 07R (205/45/16) to my budget 182 Clio build (as cannot get Federal RS-R in the size I want, and can't stretch to AR-1's for this build). So see how they fair, look similar to the RS-R.
 

182Trev

ClioSport Club Member
  Clio RS182
Interesting AI research, personally I wouldn't call AR-1 or R888R budget tyres (depends on your thoughts on what is budget and premium).

Over the years I've used on track and road (mainly to / from trackday's), R888R, Federal RS-R, AR-1 and AD08-RS.

In my experience AR-1 are slightly better than R888R at around a similar price and I'd choose the AR-1 nowadays where budget allows (and I've ran R888R's for years on track, till my brother fitted AR-1's to his Caterham copy kit car).

As for the AD08RS, they are actually really poor in my opinion, have some fitted to my Mini JCW R56 (came with car, but newly fitted), they melt really easily and lose grip quite quickly, wouldn't recommend them myself.

The RS-R are a great budget tyre, especially for road use and some track time, and are only a bit behind the R888R in withstanding over heating and grip levels.

Saying that, about to bolt some Zestino Gredge 07R (205/45/16) to my budget 182 Clio build (as cannot get Federal RS-R in the size I want, and can't stretch to AR-1's for this build). So see how they fair, look similar to the RS-R.
I should clarify, I'm speaking about these tyres mainly in regards track use, AD08-RS are decent enough and work fine for a road car and are ok as an all round tyre.
 

106lad

ClioSport Club Member
  RB 182 / E36 M3 GT2
Funny, ive had R888R's on my 182 for a while. Last set did 4 track days before wearing out. Noting this was at Kirkistown in NI which is heavy on front left.

Couldn't get R888R's recently so went for AR1's and I'll be honest. I'm not sure on them.

Seemed to want to push the front a little on turn in (gripper diff fitted)

And had Marshall say there was a lot of sidewall flex to the point they though tyre pressure was low. I had them 32psi hot.

this was 2 sessions of wear. Odd wearing too. The back of the tyre block at the sipe was higher than the front of the block
20250706_131406.jpg
20250706_131403.jpg
 

182Trev

ClioSport Club Member
  Clio RS182
Looks like you know how to give it some stick there! They have definitely got warm. Look like my R888R's used to on a warm / hot day at Thruxton or Brands Hatch.

To be honest never run the AR-1's on my own car yet, but I did like the feeling they gave me on the rear, this is comparing a 1245kg car on R888R's vs an ~800KG kit car on AR-1's though.
 

R3k1355

ClioSport Club Member
Interesting AI research, personally I wouldn't call AR-1 or R888R budget tyres (depends on your thoughts on what is budget and premium).

This, the AR-1 is very much a price point above the NS2-R, the performance too. Both are good tyres but it's not a like for like comparison.

I don't know if the Federal is actually available in the UK, it's on AutoDoc but I thought they didn't ship bulky items to the UK?
 

R3k1355

ClioSport Club Member
Seemed to want to push the front a little on turn in (gripper diff fitted)

And had Marshall say there was a lot of sidewall flex to the point they though tyre pressure was low. I had them 32psi hot.

this was 2 sessions of wear. Odd wearing too. The back of the tyre block at the sipe was higher than the front of the block

You might need to play with the pressure settings a little, try a few more psi

Nankang recommended HOT pressure settings:

  • 800-1000kg vehicle weight: 24 to 32 psi
  • 1000-1400kg vehicle weight: 27.5 to 37 psi
 

Filters

Wales - South
ClioSport Area Rep
Interesting.
Funny, ive had R888R's on my 182 for a while. Last set did 4 track days before wearing out. Noting this was at Kirkistown in NI which is heavy on front left.

Couldn't get R888R's recently so went for AR1's and I'll be honest. I'm not sure on them.

Seemed to want to push the front a little on turn in (gripper diff fitted)

And had Marshall say there was a lot of sidewall flex to the point they though tyre pressure was low. I had them 32psi hot.

this was 2 sessions of wear. Odd wearing too. The back of the tyre block at the sipe was higher than the front of the block View attachment 1750716View attachment 1750717
Tyre management plays a huge part in tyre longevity. To me they look overheated and over pressured judging from the grain of the tyre. Look as though you went out with high pressures to start with then bled them off.

Try 22psi-24psi cold starting pressures and build the heat in to them gradually on your first session (and again after lunch)
I'd be aiming for 28psi-30psi hot pressure on a 950kg car. I'd also consider running a wider tyre.

I would not try 35psi. You'll just shred the centre of the tyre and delaminate it.
 

106lad

ClioSport Club Member
  RB 182 / E36 M3 GT2
Interesting.

Tyre management plays a huge part in tyre longevity. To me they look overheated and over pressured judging from the grain of the tyre. Look as though you went out with high pressures to start with then bled them off.

Try 22psi-24psi cold starting pressures and build the heat in to them gradually on your first session (and again after lunch)
I'd be aiming for 28psi-30psi hot pressure on a 950kg car. I'd also consider running a wider tyre.

I would not try 35psi. You'll just shred the centre of the tyre and delaminate it.

Oddly they were around 26psi on the first outing and I raised the pressure to 30.

They are 205/45/16's
 

Filters

Wales - South
ClioSport Area Rep
Oddly they were around 26psi on the first outing and I raised the pressure to 30.

They are 205/45/16's

30psi at the start of session after allowing them to cool from the previous session? 🤐

That explains why it looks like there's more wheel rim than sidewall. And why the marshal said it looked as though it was rolling on to the shoulder of the tire.

Maybe look at running a 215.45.r16 or get yourself a set of smaller wheels. Always found the 1*2s handle better on a smaller wheel.
 


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