Width and offset
I'm wanting to go with a little wider tires front and rear in something real sticky, car is a Summer sunny day driver only. Has 265/35-18 up front and 285/35-18 rear on Z06 wheels, replicas I think ? Since they are 18".
I'm hoping I can go with 275's in the front and 295's in the back on the wheels I have in the same height if possible. Currently have mismatched front and rear tire brands on the car that came on it when I bought it, looking to have matching tires and a tad wider. I've found both Michelins and Contis in Summer sports tires available in 275/35-18 and 295/35-18 sizes and hope I can fit them on my wheels without issue but not sure what size my wheels are and if that will work on the car even if they fit on the wheels. Not sure how to tell if I can do this.
Looks like the front are 9.5" given I came up with about 10.5" overall near as I could tell. The back I think are probably at least 10",came up with at least 11" overall and maybe a bit more so maybe 10.5".
Looks like there's plenty of room for wider tires on both ends.

Now I'm thinking maybe a 305 or 315 on the back and maybe a 285 up front. I have no doubt the 295 and 275 will fit in a 35 height.
Would like to go 305 or 315 on the back but can't find matching 275 or 285's for the front.
https://www.tirerack.com/tires/TireS...earDiameter=18
The few 315/35-18's I've found didn't have a matching 275 or 285/35-18 for the front. I don't really want to go 30's all round and lower the car even more.
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A 315/30/18 is 0.4in shorter than the stock 275/40/17s, and only 0.2in shorter than a 275/35/18.
https://tiresize.com/calculator/
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A 315/30/18 is 0.4in shorter than the stock 275/40/17s, and only 0.2in shorter than a 275/35/18.
You can't run a 315/35 and a 275/35, they are different heights, the "35" is the aspect ratio that is the height of the sidewall based off the width of the tire. If you want a 315/35 then you need a 275/40 or 285/40 tire, which will all be overall taller than stock. A 315/30 would be close to equal height as a 275/35 or 285/35.
https://tiresize.com/calculator/
The few 315/35-18's I've found didn't have a matching 275 or 285/35-18 for the front. I don't really want to go 30's all round and lower the car even more.





