Hi Guys,

I have been doing a lot of reading in preparation of purchasing new wheels and tyres for my CL9, as my current Yokohama A.Drive R1's (AR01) 205/55/16 on the stock alloys are getting to close their use by date.

I drive the thing fairly hard and are just starting to attend hillclimb days. I was originally thinking I would go as wide as I could to increase the contact area on the road. I was thinking 17x8 rims with 245/40/17 with some Yokohama S.Drives (I might be a bit optimistic about what width will actually fit on the car, will do some more measuring on the weekend)

Then I came across some information to say that for best handling I should go for a rim that is 90% of the tyre width. Ok so 90% of 245 is 220mm or 8.68 inches which I feel is starting to get to wide for the guards.

I can then go back to a 225/45/17 which 90% would make 202mm or 8 inches.

What option is most likely to give me the best overall handling?

Is anyone running a similar setup?