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tyres - again

Tony

Tony

PCGB Member
Member
Nearly December - must be time for another thread on tyres!
The factory has recently issued their recommendations for 'classic vehicles and youngtimers' and interestingly for the 964 variants, RS included Continental ContiSportContact2, and Michelin PilotSport PS2 come out on top - ahead of S02's an Pirelli Rosso's - does anybody out there have any experience of these on an RS?

Reason for asking is the need for the best list 1a tyre for sprints as some clubs are banning the Toyo R888 and similar 'R' tyre tyres in road classes.

Tony
 
Michelins are ok, used them in Clubsport in road tyre class. Predictable and good grip for a road tyre.
Contis I used only on a road car, also ok, what I heard is that they don´t last on track, the compound is too soft for track use.

There are more tyres like Marangoni Zeta Linea, very good (at least in the dry, no experience in the wet)) and little money.


Hacki
 
Tony R888s are list 1b tyre, and they are still list 1b for 2010 with the MSA, so unless you sprint series is not running on MSA tyre lists, then I guess you are ok. If however, they are writing tyres into their regs (Which they might be), you'll need to work out what they are letting you have available. They will be pretty firm by now though, as regs need to be set in stone (pretty much) by mid december.

Might be best to contact your series co-ordinator to clarify your choices first. MSA has the blue book on line which may help too.

All the other tyres you mention are list 1a.
 
List 1a Tyres for Production Saloon Car Racing/Production Sports Car Racing
List 1b Sports/Uprated Tyres Suitable for Competition

And all the info you need here
http://www.msauk.org/uploadedfiles/msa_forms/bluebooks/10/196-206%20Permitted%20Tyres.pdf
 
Thanks guys,
Hacki, spot on as usual - have been pleased with the Pilot P2's on the Audi but that's a heavy 4wd saloon. Heard good things about Zeta Linea's but they've stopped doing them in critical 17" sizes.
Hugh most of the midland and north clubs have already agreed to go 1a only for road classes next year so I'm stuffed - PCGB will probably stick with both. I was trying to get away from running 2 sets of wheels and tyres hoping to sell the toyo's (on 18's) to fund a set of 17 " Dymags!

Hey ho!

Tony
 
OK, that makes sense, in which case you will have to look for a list 1a tyre.

leaves the rest of us flexible on what we pick. [:D]
 
ORIGINAL: Tony

Heard good things about Zeta Linea's but they've stopped doing them in critical 17" sizes.
Click to expand...

I run them on my "road" wheels, but have probably only done a couple of thousand miles at most on them, so don't have much by way of comment, other than that they seem fine on the road - not noticeably noisy or uncomfortable. However I have tried them on track both in the wet and dry. In the dry they hang on really quite impressively. They are soft, so I suspect would suffer in a long session. In the wet they were pretty leathal which susprised me. They appear to have good deep V tread, so I thought would clear water well, but I found them pretty poor at a very wet Castle Combe. To be honest I'd have been better off using my usual track tyres (Dunlop SSR).

Jamie
 
Hi Tony

Don't forget that tyre tests by both EVO and Autocar awarded Goodyear Eagle F1 Assymetrico's a resounding victory over all the obvious rivals recently. They performed extremely well in wet and dry aswell as braking, outright grip, everything really.

Ian
 
Thanks Ian,
I'd forgotten abourt that EVO test - although I've not heard of anybody running them on one of our cars.

Still open to suggestions - PS 2 look like favourite so far, I can't get Zeta Linea's in the right size any more - would like to hear if anybody has run them on ony sort of 911.

Tony
 
I have had the conti's and the rosso's in the past. Both fine road tyres but less ideal for track. On my car ,on track they used to squeal a fair bit . But i guess that's par for tyres designed for proper road use. I thought the wear was reasonable on them though. Given R888's and the like come with less tread depth to start with, the others "should" last a little longer. The level of grip from the R888's or Dunlop D02G's on a well surfaced track is in a completely different league i think!
I have noticed that toyo do another tyre can't remember the name of hand T1 R ? that looks a lot like the old dunlop ssr tread pattern, i wonder wether it's as good as the old SSR's ?
 
Be wary of using tyres with deep tread patterns on track. The reason that tyres like R888s dont have deep treads is that on track the extra movement causes higher heat and lead to chunking. This is where large peices of nice new tyres despatch themselves from the tyre. Not pretty, very expensive. If you really are considering using a deep treaded tyre properly on track, you may want to consider shaving the tyre to avoid that issue. Or drive a bit more gently [:D]
 
ORIGINAL: h_____

Be wary of using tyres with deep tread patterns on track. The reason that tyres like R888s dont have deep treads is that on track the extra movement causes higher heat and lead to chunking. This is where large peices of nice new tyres despatch themselves from the tyre. Not pretty, very expensive. If you really are considering using a deep treaded tyre properly on track, you may want to consider shaving the tyre to avoid that issue.
Click to expand...

Good point! That´s what people used to do in Clubsport like GTP. I forget to mention that. Brand new tyres with deep tread pattern are not an option on track. Either use them on the road for some 3,000 km or have them shaved.

Hacki
 
That is a good point, something I knew but had put to the back of my mind.
But, in a sprint/hillclimb of under 1 mile seems to me there's maybe a trade off
Deep tread moves about but gets heat in the tyres which helps them work (over the very short distance)
Shaved tyre is more stable - but heats up less.

Any thoughts?

Tony
 
ORIGINAL: Tony

I can't get Zeta Linea's in the right size any more - would like to hear if anybody has run them on ony sort of 911.

Tony
Click to expand...

errrrrr, that's what I was talking about ....................

Jamie
 
Sorry Jamie,
brain running faster than fingers, it was the Goodyears Ian mentioned that I wondered about, the Zeta's I've heard good stuff from others as well as yourself, but as I say can't get the right sizes any more.

Tony
 
Hugh that was sort of the point i was trying to make, not very well. The deeper tread patterns last longer for mixed use and occasional trackdays. The R tyres are designed for track use and wear out quicker for mixed use by nature of the reduced starting depth. Though I guess if you used them exclusively for track use you'd wear the road tyres out quicker, dependant on how you looked after them or not. As far as i know the old dunlop ssr's were regarded as a very good comprimise tyre for road and track with good dry grip and good wet performance. Hence I wonder about the T1's
 
Right undestood - and there we have it all on the same page.


except Tony still doesnt know what to get!!![:)]
 
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