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Toyo 888's what load rating

Dekker

Dekker

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On standard wheels load rating is 89/94 front/rear.

The only 888's I can get are 94's for 225/45/17 or 91's for 215/45/17 theses are for 8J wheels on the front.

I'm assuming fitting 94's would be too stiff a tyre wall for the fronts so should I go for the 215/45/17's instead which are 91?
 
David, apart from being more sticky, one of the main points of fitting a track tyre like the R888 is that they have a stiffer side wall so that they don't start folding over under load. So, there's no need to worry about the load rating being higher.

Also, you should ideally use the 225/45 on the front as this has a similar rolling radius to the 255/40 that you'll put on the rear. If you choose a 215/45 on the front you'll have a miss matched rolling radius between front and rear.

p.s. Be prepared for the much higher tyre noise that R888s make. [:D]
 
This reminds me of another 888 related question that I keep meaning to ask. I have heard mention on this forum about different compounds being available yet I can see no reference to such things on my tyres nor invoice. I need another set, does anyone know of a compound choice and, if so, which one to go for?

Ian

 
I've seen references to 2G or GG which means medium compound.
There's a 3G or GGG which is soft grade suitable for sprints and hill climbs.

So logically there must be a G rated for hard compound, though I haven't seen any for sale.
 
David,

I agree with Steve on sizes (and road noise). If at all possible I would recommend a spare set of wheels and keep the 888s just for track where they work incredibly well on our cars. Normal good quality road tyres are far more compliant and enjoyable for road use, at least with the RS suspension.

Ian.
 
The tyres will be on a spare set of wheels and reserved for trackdays only.

I've heard before how noisy the 888's are but it's good to be reminded.

I have managed to source some 225/45/17 89W's so now have the choice of 89's or 94's for the front tyres,

Decisions, decisions.
 
Thanks Steve and Ian,

my head is spinning from reading so much about TD tyres, going over many old threads on rennlist and pistonheads. Steve you pop up all over the place
m9.gif


I have some Antera 17's 8J and 9.5J I bought some time ago and they had tyres 215/45 and 255/40 and worked well on my cab so I know there's no problem with brake electronics getting confused. The previous owner was a garage south of London who had a small stable of race prepared cars for sale or hire and they said they had been used on a 964.

A few useful sites

This one for checking the correct tyre size for the rims.
http://www.alloywheels.com/Tyre_Calculator

This site is useful for finding out the changes in fitment within the wheel arch.
http://rimsntires.com/specspro.jsp
 
David, you're thinking too much. Just buy the tyres and see how you get on. [:D]

To go back on myself slightly. The 225/45 will match the 255/40 almost perfectly (this gives a ratio of 101.25:102). The 215/45 produces a ratio of 96.75:102 so the mismatch is quite small and you're unlikely to see any adverse effects. However, I'd still stick with the 225s as they help reduce understeer. The downside of the 225 is that you'll get more rubbing in the arches.
 
225s on the front is the best thing this side of 993RS wheel carriers for reducing understeer :)

The 225/255 combo on 17s gives a nicely balanced setup that will allow the car to move around in a controllable fashion from the rear without frustratingly washing out at the front which is what happens (for me anyway) on 205s.....

Cheers,
kevin
 
Agreed. Go for the 225s. I thought the car might feel over-tyred as the 205s are great on the road. Not so, they are excellent on track in every way.
 
I have just noticed that Michelin now do a Pilot Sport Cup 2, already as small as 17 inch and they are promising to offer down to 15 inch soon.

They claim much improved wear rates. I'll check prices in due course and I suspect many track day drivers will be tempted although I'll probably stay with Toyo due to total satisfaction with my last set.
 
Just to broaden the debate a little, I'm looking at a few cheaper options for track tyres, so far I've come up with the following (all 225/45/17 and 255/40/17)

Mich Pilot Sport Cups £710.36 from Tyreleader.co.uk
Toyo R888 c.£710 from Tyreleader / Demon Tweeks - should do better from Camskill
Kumho V70 similar price to R888 from Camskill
Federal FZ201 £648 from MOT Motorsport or Demon Tweeks
Hankook R-S3 £524.96 from Tyreleader
Nankang NS2R £424.08 from Tyreleader and or Demon Tweeks

There is a massive range in pricing between brands and suppliers. I only have experience of the R888 and Mich Cups, and haven't been able to find any Porsche users of the other options. I'm keen to try them and was tempted to start with the Federal FZ201 as it looks closest to a proper motorsport tyre.

(There are other options eg Dunlop DZ03 ?, Avon ZZR, but have not checked sizing or availability, I just know the Dunlops are stupidly expensive, though meant to be very good)

Last time I bought a set of R888 they were under £600 - prices are getting silly now !

Any input/experience from others most welcome.............

ps This is a cross-post from a discussion happening on Rennlist

Jamie
 
Significant range in prices there, Jamie.

Risky business though. There is nothing worse than being stuck with crap tyres and that is exactly what 'General' used to be known for.

We'd all be interested to know how you get on if you gamble on a cheaper option. How did you rate the Toyos versus the Cups btw?

Ian.
 
To be fair the Toyos were on the RS and the Cups were pretty old and on my Clio race car, so not directly comparable. Many people, whose opinions I rate highly rave about Cups vs Toyos. The Cups have less tread depth so don't last as long, but grip and lap times are better. The Cups are supposed to be more consistent, whereas the R888s do overheat and 'go off'. If money no object I would go with Cups every time.
I'm undecided which option to take..........

Jamie
 
My experience of the 888s is that they can eventually go off but you can easily feel it, especially as they get close to the end of their life. It is not too hard to stay just within their limits. I heard that the Michelins grip really hard but let go without warning.

The other advantage of the Toyo's is their good behaviour in the wet, completely contrary to the Cups.

Therefore, as an enthusiast of merely average skills, my next tyres will be 888s unless those 17in Cup 2s turn up sooner rather than later and assuming (foolishly) that they are not too expensive!

Or do the sensible thing and retire the RS, but where's the fun in that?

Ian
 
Yes, agreed about the R888s vs Cups in the wet. I did a race in the Clio in biblical rain on R888s and once I'd built up enough confidence to push them I was flying through the field (until the gearbox packed up, but that's another story !), passing cars with conventional road tyres run as wets.
My next set of track tyres are more likely to be used on my 968 CS than the RS, but the wheels are interchangeable, so if I get a rush of blood to the head the RS may find its way back onto a track at some point.
Although the 968 is obviously front engined and heavier than the RS, I do think the comparison of tyre experiences is still valid.......
I continue to look for people with experience of some of the cheaper track tyres.

Jamie
 
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