Not sure how big of a performance difference will a 185 to 195 upgrade be, but FC will be affected a little, not much, perhaps 2-3% increase. Only thing about 195/55 is that there are plenty in the market and are cheaper than 185/55.

However, I've been pondering about this topic as well. I have 185/55 now, and if I upgrade to 195/55 but low rolling resistance tyres (like the Michelin XM2+), will the FC be affected less?

This post has been edited by Jescon: Nov 19 2019, 04:31 PM