Howdy all,
Just picked up a new set of 16x7" rims today to upgrade from my 15s.
I will be in the market shortly for some new Kumho KU31s (best price to performance ratio IMO) and I was wondering which size I should get? Tempe Tyres offer both the 205/45/16 and 215/40/16 for $125 per wheel fitted.
I did a speedometer calibration calculation with my current 195/50/15s; for the 205/45 the speedo will be out by -2.5km/h (when travelling at 100km/h) and for 215/40 it'll be out by -0.5km/h. Both of these pretty much negligible since I was checking the speedo with my GPS and it seemed to be reading about 5km/h faster than actual speed.
My car is an EM1 Civic with a b16 engine, so the difference between the two I imagine would be the 215s would have more grip but decrease acceleration and fuel efficiency, also the lower profile would mean a harsher ride quality (if that's even possible?).
What are your thoughts on the matter? Would the extra grip not be worthwhile at the cost to acceleration? Would the 215s be too wide for a 7" width rim?
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