Best wheel size for handling?
Discussion
Thinking about getting a second set of wheels that I can fit with 888s just for doing trackdays.
Not fussed about the appearance but what is the best size for outright grip and feel?
Gut instict says to go for maximum size (i.e. 18"s) with lowest profile tyres to the amount of rubber in the system as low as possible, but I've seen a few other people on here that regularly track their cars have gone for the 17" RL7s or SP12s over the 18" options.
I also remember Joo waxing lyrical about the best Cerb he ever drove on track was an S6 with standard 16" wheels - and going for standard 16"s would certainly keep costs down.
Thoughts?
Not fussed about the appearance but what is the best size for outright grip and feel?
Gut instict says to go for maximum size (i.e. 18"s) with lowest profile tyres to the amount of rubber in the system as low as possible, but I've seen a few other people on here that regularly track their cars have gone for the 17" RL7s or SP12s over the 18" options.
I also remember Joo waxing lyrical about the best Cerb he ever drove on track was an S6 with standard 16" wheels - and going for standard 16"s would certainly keep costs down.
Thoughts?
Nefarious said:
Tanguero said:
I have now got a set of 16" with R888s on them for sprinting and it is a brilliant combination!
What size tyres did you go for in the 888s on th 16"s? 225/45 and 245/45?I have disks and 6 bolt callipers off a 4.5 Cerb on my 4.2 and the 16" wheels fit over them fine with about 15 mm clearance.
Edited by Tanguero on Monday 17th May 11:20
Tanguero said:
Nefarious said:
Tanguero said:
I have now got a set of 16" with R888s on them for sprinting and it is a brilliant combination!
What size tyres did you go for in the 888s on th 16"s? 225/45 and 245/45?I have disks and 6 bolt callipers off a 4.5 Cerb on my 4.2 and the 16" wheels fit over them fine with about 15 mm clearance.
Edited by Tanguero on Monday 17th May 11:20
grahamn said:
Before you decide on wheel sizes, check what size 888's you can get. I had a set of 18" and couldn't get the 888's in that size. I now have a set of RL7, with 888's on, which I use on track.
For the 18"s Camskill list r888s in 255/35/18 (ideal for the rear) and 225/40/18 (which I reckon is acceptably close for the fronts).For the 17"s, they list a 255/40/17 (which I guess would be right for the rear), but only a 225/45/17 (too high profile?) or 235/40/17 (too wide?).
Edited by Nefarious on Monday 17th May 12:43
Nefarious said:
grahamn said:
Before you decide on wheel sizes, check what size 888's you can get. I had a set of 18" and couldn't get the 888's in that size. I now have a set of RL7, with 888's on, which I use on track.
For the 18"s Camskill list r888s in 255/35/18 (ideal for the rear) and 225/40/18 (which I reckon is acceptably close for the fronts).For the 17"s, they list a 255/40/17 (which I guess would be right for the rear), but only a 225/45/17 (too high profile?) or 235/40/17 (too wide?).
Edited by Nefarious on Monday 17th May 12:43
I run 225/40 Falkens on the front they look snug in the arch and have felt them snag very occasionally on full lock (read that as attempting donuts on the last Spa trip 
) Day to day though no problems and never felt rubbing whilst on track. Problem is that each tyre type is different and I guess the sizes end up as the nearest equivalent rather than bang on exact, I have a feeling that 888's have a squarer edge profile than most road tyres so a 225/40 R888 may well rub more than mine do. I think Brummie had 888's on 18" Spiders and did mention he had occasional rubbing on track, when he went to SP12 wheels he moved to a 17" front which I think is probably the better option - it's also going to depend a fair bit on geo and ride height, even running more neg camber will tuck the tops in more inside the arches but wont make much of a difference to front and back clearance which is where I suspect they snag when on full lock.
) Day to day though no problems and never felt rubbing whilst on track. Problem is that each tyre type is different and I guess the sizes end up as the nearest equivalent rather than bang on exact, I have a feeling that 888's have a squarer edge profile than most road tyres so a 225/40 R888 may well rub more than mine do. I think Brummie had 888's on 18" Spiders and did mention he had occasional rubbing on track, when he went to SP12 wheels he moved to a 17" front which I think is probably the better option - it's also going to depend a fair bit on geo and ride height, even running more neg camber will tuck the tops in more inside the arches but wont make much of a difference to front and back clearance which is where I suspect they snag when on full lock.Gassing Station | Cerbera | Top of Page | What's New | My Stuff