Toyo R888

[pupp]

Anyone on 'em? Whaddyareckonthen?

[GarryM]

Not yet - but will be at the w/end.

[David H]

Guillotine uses them

www.pistonheads.com/gassing/profile.asp?h=0&memberId=16341

And I think he likes them, although I also think a lot of his driving is on track.

[Gruffy]

These are gaining favour with the Lotus community. As sticky as the sticky stuff that's currently de rigeur (A048s) but more hard-wearing. Seems pointless unless you do at least the occassional trackday though.

Gruffy

[GarryM]

Gruffy said:

Seems pointless unless you do at least the occassional trackday though. Gruffy

Probably, but then if you tend to only drive in the dry then why not? They're Z rated and hopefully will be more grippy than standard options.

I sprint my Griff occasionally and enjoy track days so more appropriate for me but I must say I'm a bit concerned about travelling to events in the rain. I had a 4 hr drive in torrential rain earlier this year which was pretty scary on Bridgestones let alone R888s. At least one other in the TVRCC sprint series does it though so it's not impossible in the rain, just slow!

[Gruffy]

GarryM said:

Gruffy said: Seems pointless unless you do at least the occassional trackday though. Probably, but then if you tend to only drive in the dry then why not?

As I understood it, they take a little heating up to see the extra benefit, which you can really only do on track no matter how you drive on the road.

Gruffy

[Tuska]

The winner of this years TVR sprint championship has done so on a set of 888's. (Cebera 4.2).
He loves them.

[martinworth]

I had a new set on Twin Turbo Grif at Snetterton and they were fantastic. Felt like a totally new car in the corners. Much better traction pulling onto the straights.

[cerbagriff]

I put a set of R888s on my cerb for Cream, felt great and grip seemed so good. I put 235.40-17's working on the theory that the harder cornering would give more body roll and the 255's already fouled the bodywork on fast road use. Still think they were worth the money and a good days driving barely dented the tread.

>> Edited by cerbagriff on Sunday 6th November 12:51

[tvrbob]

These are very stiff side wall soft compound track tyres. IMO They are useable on the road but will make the ride much more jarring, they are likely to tramline, they will last at best 2 - 3,000 miles and will be unusable / dangerous in the wet. Most of the tread will be scrubbed off too cold because road use cannot generate anywhere near enough temperature to realise the advantage of the soft compound.

I'm sure, even cold, they will have higher levels of dry road adhesion than their sister road tyres T-1R but road use will not see their true potential and with them scrubbing away so quickly they just don't make sense to me for the road.

I have acquired a spare set of rims and will be using 888's on those for next season's trackdays.

Just my opinion.

[tiny]

Plan to stick them on my Griff when my current 17" Toyo Proxies go ( which won't be long given the track time I'm currently doing )

Only hope I don't get a day like Silverstone last week( see separate thread ) when I've got them on

[GarryM]

tvrbob said:

These are very stiff side wall soft compound track tyres. IMO They are useable on the road but will make the ride much more jarring, they are likely to tramline, they will last at best 2 - 3,000 miles and will be unusable / dangerous in the wet. Most of the tread will be scrubbed off too cold because road use cannot generate anywhere near enough temperature to realise the advantage of the soft compound.

Had a drive on Saturday so by no means a full test but initial impressions...

They feel slightly more compliant than the SO3s and less prone to tramline. Road was wet in places but not raining. Plenty of grip for the conditions. Hope to goodness they're not worn out in 2000 miles! The R888s are different profiles: 215/50/15 and 225/50/16 compared to SO3s 225/50/15 and 245/45/16. They look good on the car and unlike some of the 205/50/15s I've seen on Griffs, these don't look too small.

[Guillotine]

they're excellent.
hard wearing (get more than 2k on the track, upto 6K!)
yes they do like temp, but will out perform any road spec tyres at normal temp.
sizes may be an issue. i run 16x225 alround. which is fine.
15's may now be available. if not then soon.
do tramline a touch on the road but nothing excessive, but mine is set quite pointy anyway!

my only proviso is standing water. dry fine. damp fine. raining fine.
but standing water MAY prove too much.
they are road legal, and have passed all regs, so should be as good as any...less quality tyre but with the lack of grooves i SUSPECT water ejection may suffer. can't have it always!!!!

i'd reckomend them...and have! they were worth 11 seconds at Spa in Sept. Toyo asked me to do some back to back stuff for comparisons on TVR.

11 SECONDS!!!!!!! and there was more to come!
ran on proxies all morning, and pulled 3:15s
changed to R888's, and pulled 3:04s. and wasn't pushing as hard as the proxies!
then the clutch went

these tyres REALLY suit the Griffs handling, and I'm sure they'll do fine on other Tiv's.




BTW, I'm on my fourth set now

>> Edited by Guillotine on Monday 14th November 18:39

[rnd]

Has anyone found out from Toyo as to what is the normal warm pressure for track use. I would not think they are standard pressures.

[Guillotine]

i run mine at 2 psi below std = 20f22r due to the stiffer sidewalls and harder carcass & shape, Toyo reckon that they generally run them at 30-35psi but this is based on heavier saloon racers (toyo series).
Temp is the thing. i've only got mine to around 60degrees, and toyo reckon the best results are to be had at 80! having said that mines was still very grippy, with no handling/traction problems with 400bhp at up to 150mph, so that should be good enough for most track TVRs!!
i'll be doing some more tests at Spa next year(see TVRmonSPA thread), so we'll have some more data then.

if you're using 16" 225s the rolling circumference is smaller at the rear so you may have to lift the back 1/2 inch to stop the understeer at high speed corners, but the extra grip on the front will equalise this unless your very quick.
andy

Toyo don't have a std spec for TVR/R888...yet

>> Edited by Guillotine on Monday 21st November 17:58

[GarryM]

I'm running mine at normal pressures (22F 24R - cold). Seems to me the stiff tyre wall is relative to other Toyos as they are a softer tyre than the SO3s I had before. Tramlines much less, pretty well gone. I've not been on track with them yet but would guess they'll be happy at around 28 hot. (215/50/15 & 225/50/16)

[v8 racing]

I think tyre pressures are each to there own, i like to run high pressures to feel what the car is doing and not just the roll on the tyres, when i was racing in the toyo series i was running around 40psi hot but these were the proxes not the 888, when you run lower pressures although the car may feel more grippy due to the bigger footprint you will have if you start throwing the car around the tyre wall moves so much you dont know if its the tyres or the car thats moving only my opinion!