Quote:
Originally Posted by OrbitalEllipses
You can go to a different section width and aspect ratio Alan. I wouldn't stay at 215/45 if I was already shelling out for new wheels (that don't meet stock class rules anyway).
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The 215 tires will be "optimal" for summer performance tires (RE11, Z1, etc). There will be a small bit of strecth, but the sidewalls will be stiffer. On the stock OEM tires, 17x8 would stretch the tire a too much, but summer performance tires will generally have wider shoulders to accommodate for wider wheels. You can look at Tire Rack 215/45/17 summer tires and it will show a section width of 8'', which is the same as wheel width, 17x8.