A benefit of having the lower profile tires is in handling. The proportion of a shorter, flexible sidewall to the ridged wheel means an improved response and helps keep the tire square on the road for more stability especially in cornering. I have a few words of caution though. Going up an inch or two in wheel size will add weight to the car because the wheel material is heavier that the tire material that’s replaced. Auto enthusiasts call this “unsprung weight”. This can reduce gas mileage, acceleration and braking, so be aware of the new weight you’re going to be adding. Sometimes the “coolest” looking wheels are also the heaviest. A lower profile tire also “feels” the road more thereby reducing comfort levels.
If you go up a size on a wheel and tire but do not compensate with the profile then you will have to have your speedometer recalibrated because it was set for the particular rolling diameter of the original tire and wheel. You should also check with the manufacture to see if after market wheels or wheel sizes not recommended will void you vehicles warranty.
