Track day tyre Conudrum....why do I bother!!!
Discussion
My current set up on the car for road is 225/45/16 front and 245/45/16 rears. I have the Brembo brake upgrade which is fantastic and the 7.5" Estorils just fit nicely, I am very happy with this set up.
However I need some trackday wheels and tyres and want to keep the set up as close to my current set up as possible so I don't have to do any thing over and above swapping wheels over. Originally I thought get some 7.5" x 16" wheels with the same ET and buy the same size trackday tyres. Unfortunately I could not find any other 16 " wheels that would fit over the brakes other than Estorils and buying 4X16" Estorils was going to be very expensive given that I would probably have to buy two full sets and discard 4 15" wheels! Furthermore I understood tyre choices where limited on 16" wheels though this now appears not to be the case as I can get r888's and VG70a's in the right sizes at 16".
So to the point of this long winded yarn! I have bought 4 7.5"x17 Compomotive Mo5s in the same ET and very nice they look too! To match my current set up I simply thought drop to 225/40/17 front and 245/40/17 rear.
Its not that simple!!
Firstly web sites tell me the max tyre fitting on a 17x7.5 wheel is 225 compared to 245 on 16" rims, you learn something everyday!! Secondly R888s and V70a's do not do this size in a 40 profile and the best I can get is 215/40/17 all round (205/40/17 in R888s). So my choices appear to be:
215/40/17 all round and lose 25mm grip on the rear, or
225/45/17 all round, reduce the grip loss a bit but have to drop the car (I have adjustable suspension) by 13mm each time I swap, or
Stick with the 16" wheels and swap the tyres over (£40) every time I need to.
Any other options or suggestions on this guys, particularly interested in the views of the Sprint guys and those that have had the same problem!!
Cheers
Rosey
However I need some trackday wheels and tyres and want to keep the set up as close to my current set up as possible so I don't have to do any thing over and above swapping wheels over. Originally I thought get some 7.5" x 16" wheels with the same ET and buy the same size trackday tyres. Unfortunately I could not find any other 16 " wheels that would fit over the brakes other than Estorils and buying 4X16" Estorils was going to be very expensive given that I would probably have to buy two full sets and discard 4 15" wheels! Furthermore I understood tyre choices where limited on 16" wheels though this now appears not to be the case as I can get r888's and VG70a's in the right sizes at 16".
So to the point of this long winded yarn! I have bought 4 7.5"x17 Compomotive Mo5s in the same ET and very nice they look too! To match my current set up I simply thought drop to 225/40/17 front and 245/40/17 rear.
Its not that simple!!
Firstly web sites tell me the max tyre fitting on a 17x7.5 wheel is 225 compared to 245 on 16" rims, you learn something everyday!! Secondly R888s and V70a's do not do this size in a 40 profile and the best I can get is 215/40/17 all round (205/40/17 in R888s). So my choices appear to be:
215/40/17 all round and lose 25mm grip on the rear, or
225/45/17 all round, reduce the grip loss a bit but have to drop the car (I have adjustable suspension) by 13mm each time I swap, or
Stick with the 16" wheels and swap the tyres over (£40) every time I need to.
Any other options or suggestions on this guys, particularly interested in the views of the Sprint guys and those that have had the same problem!!
Cheers
Rosey
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