anyone tried the R88R yet

[andye30m3]

I aim for 30-32 hot on R888's usually head out around 24 cold.

[jesfirth]

77racing said:

jesfirth said:

30 is interesting. did you run R888's at that sort of pressure as well? I run my old 888's at 21 but I guess my griffith at 980kg is lighter than a cupra? I will be interested to see if the R888R's need more pressure.

blimey 21 is low for a hot setting , I aim for 26 hot on GG compound on 888's.

Thanks Perry - that's interesting. I should probably try back to back tests between say 21 and 26 on a TD and see what my data logger comes up with.

Bear in mind I sprint so we go out on stone cold tyres - so that what the 21 represents. As a sprint is max 100 seconds they never get really hot - well maybe they do at Goodwood but not many other places.

[77racing]

I think you will find a big difference between 21 and 26 psi , if you not really getting them hot enough to climb much you will not increase from 21 that much. Talking to toyo reps at the races they think 26 hot is ideal for gg 888's. I set for that and they are excellent at 26 on 1020kg 400bhp.

[jesfirth]

thanks much appreciated. will try a higher pressure in practice at the next event

[Soul Reaver]

I asked Alan at Toyo and got this

Good afternoon Mark,

I’m taking a guess that the weight of your S3 is around 1400kg. This being the case I would suggest a hot pressure of around 34psi (26psi cold) as a good starting point.

Regarding tread temperatures, you’re looking for a maximum spread of 15 degrees C across the tyre. They work well from low temps but a MAX temp of around 100 degrees C.

If I can be of any further help let me know.

[Mansells Tash]

Tires delivered from Demontweeks in the UK, so excited to try them out. I have a brand new set of R888 to compare them to as well.

[HummuH]

jesfirth said:

77racing said:

jesfirth said:

30 is interesting. did you run R888's at that sort of pressure as well? I run my old 888's at 21 but I guess my griffith at 980kg is lighter than a cupra? I will be interested to see if the R888R's need more pressure.

blimey 21 is low for a hot setting , I aim for 26 hot on GG compound on 888's.

Thanks Perry - that's interesting. I should probably try back to back tests between say 21 and 26 on a TD and see what my data logger comes up with.

Bear in mind I sprint so we go out on stone cold tyres - so that what the 21 represents. As a sprint is max 100 seconds they never get really hot - well maybe they do at Goodwood but not many other places.

I also do sprints and up the cold psi when compared to racing. For circuit racing I'll be starting off at 23/24psi on front and for sprints around 25/26psi on fronts. We do get one lap to warm up tyres though in Super Lap Scotland.

[lol1]

Anyone else used the R88R tyres yet as I'm trying them out this weekend at Snetterton on a 1160KG BMW M3 and would appreciate any feedback from anyone who has used them lately.

[andye30m3]

I tried them on my E30 320 at Snetterton over the easter weekend.

To be honest due to a number of other changes to the car and the constantly changing weather conditions I struggled to notice a great deal of difference from the old R888's

On the relatively few dry laps I managed I was within a 10th of a second of my best time on the old R888's although I was also running what should be a much improved suspension set up.

[88racing]

We had them on the Rogue Toyota GT86s for testing before the 24 and I reckon they were superb - tons of grip in the dry. Haven't tried in the in "proper" rain yet though.

[lol1]

What tyre pressures did you use with them?

[Richair]

Tried these for the first time on my pals CTR at Snetterton at the CSCC just before easter. They were a fresh set and I was sent out in the wet to give them a try and scrub them in, eek. Bearing in mind it was steady rain so there wasn't any standing water, but I was mightily impressed. They were very stable with a nice elastic limit and were a confidence booster for the conditions...

The real test for them will be at the weekend though as we're racing in Tintops on Sunday. If they're not trashed by the time I get in the car for the second stint we'll be doing well!

[88racing]

lol1 said:

What tyre pressures did you use with them?

Er, about medium...? Sorry - I have blokes wot do that for me!

[andy97]

Richair said:

Tried these for the first time on my pals CTR at Snetterton at the CSCC just before easter. They were a fresh set and I was sent out in the wet to give them a try and scrub them in, eek. Bearing in mind it was steady rain so there wasn't any standing water, but I was mightily impressed. They were very stable with a nice elastic limit and were a confidence booster for the conditions...

The real test for them will be at the weekend though as we're racing in Tintops on Sunday. If they're not trashed by the time I get in the car for the second stint we'll be doing well!

I haven't tried the new ones but the front tyres on a 1000kg fwd 210 bhp tin top used to last me about 4 meetings (4 X 30 min qualy and 4 X 40 min races). What are you doing to trash them that quickly?

[Mansells Tash]

andy97 said:

Richair said:

Tried these for the first time on my pals CTR at Snetterton at the CSCC just before easter. They were a fresh set and I was sent out in the wet to give them a try and scrub them in, eek. Bearing in mind it was steady rain so there wasn't any standing water, but I was mightily impressed. They were very stable with a nice elastic limit and were a confidence booster for the conditions...

The real test for them will be at the weekend though as we're racing in Tintops on Sunday. If they're not trashed by the time I get in the car for the second stint we'll be doing well!

I haven't tried the new ones but the front tyres on a 1000kg fwd 210 bhp tin top used to last me about 4 meetings (4 X 30 min qualy and 4 X 40 min races). What are you doing to trash them that quickly?

Andy, I'm running almost the same spec as you, 1100kg including driver and 210bhp(ish) bhp Civic...GG R888's last me 3 meetings with 7 quali laps and then 10 race laps per meeting.

On Saturday we start the new season, the R888R's are on so I'll report back how I go. I usually run 26-30psi front and 28-24psi rear (cold)

[Richair]

We've started out using Fedral RSR's, and by the time I got in the car for the second stint at Oulton last year they were hot as hell! Plenty of tread left on them, but they're not up to 40min races... But you get what you pay for and they did the job for our first couple of meetings where the car is far more capable than the drivers! The difference in the way the car drives on the new tyres is marked!

Depending on how we get on with them on the weekend I'll be considering these for my 951 (also considering Dunlops which everyone seems to love).

[Trev450]

Richair said:

We've started out using Fedral RSR's, and by the time I got in the car for the second stint at Oulton last year they were hot as hell! Plenty of tread left on them, but they're not up to 40min races... But you get what you pay for and they did the job for our first couple of meetings where the car is far more capable than the drivers! The difference in the way the car drives on the new tyres is marked!

Depending on how we get on with them on the weekend I'll be considering these for my 951 (also considering Dunlops which everyone seems to love).

I haven't tried R888R's yet, but have found in the past that 888's heat up quite a bit more quickly than both Dunlop DZ3's and Yoko 048's. This is ideal for my usage (sprints and hillclimbs) but have found that the other two are much more suited to doing repeated laps.

[andy97]

I don't know about the Dunlops, although the Porsche racers in CSCC seem to swear by them, or the new 888s but I was told a while ago by a tyre guy at one of the meetings that the Yoko A048s were a race tyre construction eligible for the road, whilst the Toyo 888s were a road tyre construction for the track.

The implication being that the Yoko were more suited to our 40 min races.

It may have changed with the intro of the new 888s.

[lol1]

Ran the R888R's this weekend at Snet on a E36 M3 weighing 1170KG for the 40 min race. As we didn't have a clue what to set them to we started in quali with 26 cold all around. we had a bit of miscommunication at the end of quali on tyre temps so for the race it was decided we needed to go out with 28 all around. Big mistake as at the end of the race we were 39 hot and sliding all over the place. Next race we will be starting at around 22 cold which will be more or less where I think we need to be.

[Mansells Tash]

lol1 said:

Ran the R888R's this weekend at Snet on a E36 M3 weighing 1170KG for the 40 min race. As we didn't have a clue what to set them to we started in quali with 26 cold all around. we had a bit of miscommunication at the end of quali on tyre temps so for the race it was decided we needed to go out with 28 all around. Big mistake as at the end of the race we were 39 hot and sliding all over the place. Next race we will be starting at around 22 cold which will be more or less where I think we need to be.

22 seems way too low for a semi slick tire. What was the car doing at 26psi? More importantly...what were the tire temps at 26psi?