Menu toggle

Wheels & Tyre Options - Discuss

jason

jason

New member
I'm hoping to have my car back in the next few weeks all nicely ready for some track work this year and embarrassing myself on my lack of any ability to drive it well - but everyone has to start somewhere...and I'm starting in my dream car...which is nice[:)]

Will be coming back with newly rebuilt engine with lots of shiny new parts (and new second mortgage[:eek:]), SRF brake fluid and spanking new pagid blues, new momo race s.wheel, front air ducts, two straight through pipes, a very attractive 880g carbon fibre strut brace, an airbox which only the holes are holding together and K&N panel and some lights that actually light up the road in the dark.

Unfortunately the half cage and harnesses may have to wait until I can afford a third mortgage, so just may have to keep the strange 1/4 cage that is in currently and add some harness straps to bolt points.

Dilema is this - currently car has some nice refurbed mags and newish pirelli asym tyres but I have an extra set of 996 17" ET55 alloys and Mich Pilot Cup Sport tyres (which I was going to put on the 968CS for track before I replaced it with the RS).

The car will do mainly track work (I hope) this year and was considering putting the other wheels and tyres on and keeping the mags all tucked up warm.

What should I do?

Discuss.
 
Hi Jason

What size are the 996 wheels? If they are 7.5 + 9, I think thats a good idea. Why would you not want to use the mags for trackdays though, isn't that where you will feel the most benefit of the lower weight etc?

Does anyone know how much difference there is in weight between:

964 RS mag wheel
964 Cup 1
Mille Miglia Cup 1 Replica
996 wheels above

Is there really that much to chose between them and is it noticeable?

Regards
 
Feroz - the 996 wheels are 7&9 not 7.5's. I'm having the weights checked against the mags so will be able to tell.

Don't know why I'm thinking of using them really - suppose a little concerned over damaging the mags and they are not easy to get hold of - am i being over cautions? If I don't use them I think I'll sell them and use the money for more tyres[;)]
 
Big difference betwen the Mille Miglia Cup 1 Replicas and the real thing. No wonder Feroz was so keen to sell them to me[;)] No wonder I couldn't keep up with the 993RS's at Judgement Day! Oh, and being a few horses less than them, a lot less skilled etc (just before anybody else says anything!)

Ask any race engineer and they would say that 3.4kgs makes a big difference with wheels both in handling terms and braking. Who knows whether we would really feel the difference. I would like to believe I could but short of back to back testing..... and that would be a pain in the wheel nuts!

I think I will stick to my plan of using the mags on the track and the replicas on the road. The track seems a lot safer place for wheels than roads with their nasty curbs that jump out and bite chunks out of your wheels[:mad:]
 
Hmmm..my 996 wheels are the C4 ones so that means 1kg heavier front corners and 2kg heavier each rear corner. Come on someone tell me what to do....I'm too tired to think tonight :rolleyes:
 
Interesting site with weight wheels - some not so obvious ones in there and also tyres are heavy!! I think Cup 1s look the best on a 964 RS but hard to find. I am quite tempted to see what a Cup 2 looks like on the car as light and I think more readily available.

....... or maybe a spare set of mags (which are actually not that light despite the hype)






[FONT=verdana,geneva"]
 
Feroz,
I've got a mate selling a set of Cup2s. They are sprayed anthracite with a red stripe around the rim (they look really good !). Let me know if you're interested and I'll put you in touch.

Jamie
 
Feroz, you make a vilid point, tyres vary considerably in weight - and the race construction tyres may not be lighter than 'normal' road tyres. P zero C's were certainly heavier than assimetrico's. Personally I don't think the Cup 2's look particularly good so would favour even a replica Cup 1 to them.
It depends what you want - if ultimate track speed, go for the lightest, just don't complain if an agressive approach to curbs means you have to scrap the odd one. If looks are important - cup 1's every time. For general road use whatever you can get the best deal on. Ffinal point to consider, tyres - not all 'track' tyres (list 1b & slicks) are available in a full range of sizes, so that may dictate whether you run 17's or 18's.

Tony

 
Tony

What is your view on the best trakday tyre for our cars? I have been looking at this and there is a discussion on the GT£ forum (in between personal insults[;)]) and more views the better.
 
Hi Jason, I have same 2 sets of wheels as you . I use the original mags on track and generally through 'dry season' /english summer. The tyres I use on the mags are Dunlop D01J , good grip compound , deeper road legal tread than Corsas or Cups , only weak point is when its really wet. I dont see the point of not using the mags that come with the car , if the wheels or car are too valuable to use you might as well start tracking a cheaper more replaceable car eg old BMW 325 stripped out ,braked up, and caged.
The 996 C4 (98 vintage) wheels look good on 964RS's , a lot better than twists as fitted to 996C2's and 1999+ C4's.
I use Michelin Pilot Sport on them , original fitment was MXX3 which are replaced by current N rated tyres. The Michelins are harder than Bridgestone S02 and stand up to track use better , though I normally only use them on track in cold wet weather.
If you start using sticky tyres you are going to want to use a harness , and if you start using harness you should fit at least a half cage preferably steel because if you end up on your roof the harness will hold you bolt upright like a nail about to be hit by a hammer.....
 
Simon,
I've only limited personal experience in this being a very 'casual' trackday attendee - but for what it's worth[:)]
Car came on Continentals which didn't suite it at all - every time out, several laps serious understeer, couple of reasonable laps then significant oversteer as the tyres warmed/overheated. PzeroC's were great, I'm sure more recent rubber has more grip but these were so progressive and controllable on the limit and even good in the wet. For the last couple of years I've run Pzero Assimetrico's/Directionale road/track & sprint. These have been fine as a performance road tyre. They cope well with trackdays although lacking both ultimate grip and precision they remain pretty consistent which helps a lot. They will be replaced this year probably with Pirelli Corsa's or Kuhmo's. The Kuhmo's are what most of the Speed championship runners use and the reduction in times has been dramatic, they're a;lso relatively cheap. Corsa's seem to suite the cars well - I've been out in couple and was very impressed. Michelin Cups I'm sure are excellent but for sprints & hillclimbs but don't seem to get warm enough to really work and were developed more on the later cars.
I think finding something that works consistently is probably the most important thing for those of us not out every weekend, the less variation in charateristics from cold to hot the easier the car is to drive moderately quickly.

Tony
 
Best grip seems to be Michelin Cup Sports, but pricey and life threatening in the wet. Corsas similar story; some like one over other. Compromise is Dunlop SSR (all in the archives... so won't overkill here), which are cheaper and better in wet. I have been running these through the winter and in the rain; no worrying moments of note. I think ther's a new Dunlop that I've not tried.

SO2s etc are a road tyre and my personal opinion is that they are OK at best on track. I had these on my car when I bought it but they soon got changed. Great on road, but deep tread (ie squirmy) and hard compound (ie less grip) meant they were not the track tyre for me.

Done to death elsewhere!
 
Jimmyslr, you seem to have tried so many tyres! I've heard there's a man at the Wrecclesham Wreck Shop who can help here, he's got every part you can imagine, he's even got cable ties. The people there are very helpful, especially Eddie, his skivvy, who works in the workshop.
 
ORIGINAL: jimmyslr
Best grip seems to be Michelin Cup Sports, ............................................
Click to expand...
Sorry, but cannot agree with that. There are certainly tyres that grip better but they might not last very long. And that is the key to this debate.

I am particularly interested in the Kumho's but there are various compounds and I want to make the right choice. It seems that the sprint boys use them but they don't last very long. I suspect they are using a soft to mid compound but want some confirmation. I suspect that the hard compound is about the same as Cups and as they are cheaper, it seems like a good bet. Or I could just be extravagant and get some soft ones and hope they last the whole day!!!
 
ORIGINAL: oldtimer

Hi Jason, I have same 2 sets of wheels as you . I use the original mags on track and generally through 'dry season' /english summer. The tyres I use on the mags are Dunlop D01J , good grip compound , deeper road legal tread than Corsas or Cups , only weak point is when its really wet. I dont see the point of not using the mags that come with the car , if the wheels or car are too valuable to use you might as well start tracking a cheaper more replaceable car eg old BMW 325 stripped out ,braked up, and caged.
The 996 C4 (98 vintage) wheels look good on 964RS's , a lot better than twists as fitted to 996C2's and 1999+ C4's.
I use Michelin Pilot Sport on them , original fitment was MXX3 which are replaced by current N rated tyres. The Michelins are harder than Bridgestone S02 and stand up to track use better , though I normally only use them on track in cold wet weather.
If you start using sticky tyres you are going to want to use a harness , and if you start using harness you should fit at least a half cage preferably steel because if you end up on your roof the harness will hold you bolt upright like a nail about to be hit by a hammer.....
Click to expand...

John - think you have my current thinking nailed on here. Looking like I'm going to put the Cups on the mags and use these on track - thats what they were made for. Will maybe keep the C4's and put my Pzero assy/direc on for wetter days.

Thanks for all the pointers guys...
 
You must log in or register to reply here.

Posts made and opinions expressed are those of the individual forum members

Use of the Forum is subject to the Terms and Conditions

Disclaimer

The opinions expressed on this site are not necessarily those of the Club, who shall have no liability in respect of them or the accuracy of the content. The Club assumes no responsibility for any effects arising from errors or omissions.

Porsche Club Great Britain gives no warranties, guarantees or assurances and makes no representations or recommendations regarding any goods or services advertised on this site. It is the responsibility of visitors to satisfy themselves that goods and/or services supplied by any advertiser are bona fide and in no instance can the Porsche Club Great Britain be held responsible.

When responding to advertisements please ensure that you satisfy yourself of any applicable call charges on numbers not prefixed by usual "landline" STD Codes. Information can be obtained from the operator or the white pages. Before giving out ANY information regarding cars, or any other items for sale, please satisfy yourself that any potential purchaser is bona fide.

Directors of the Board of Porsche Club GB, Club Office Staff, Register Secretaries and Regional Organisers are often requested by Club members to provide information on matters connected with their cars and other matters referred to in the Club Rules. Such information, advice and assistance provided by such persons is given in good faith and is based on the personal experience and knowledge of the individual concerned.

Neither Porsche Club GB, nor any of the aforementioned, shall be under any liability in respect of any such information, advice or assistance given to members. Members are advised to consult qualified specialists for information, advice and assistance on matters connected with their cars at all times.

Porsche
Lockton
Pirelli
Officially approved
Oracle Finance
WEX Esso
Collecting Cars
Archant Dialogue
Back
Top