I've a set of 225/45 R17 winter tyres on 17" rims. I had the tyres on the BMW for the last couple of winters and they're still in good shape.
I was comparing them with the 19's and thought the diameter was a bit small so I checked it out on one of the tyre sizing sites and the difference in diameter is roughly -4% - smaller in other words
Audi use 225/50x17 on the base and Se spec A5 which have almost the same diameter as the 19" summer tyres.
So, will it be ok to run these as on the A5 or will the -4% difference in diameter have a really noticible affect on speed reading and mileage, gearing etc to the point that I shouldn't use them?
TIA
I was comparing them with the 19's and thought the diameter was a bit small so I checked it out on one of the tyre sizing sites and the difference in diameter is roughly -4% - smaller in other words
Audi use 225/50x17 on the base and Se spec A5 which have almost the same diameter as the 19" summer tyres.
So, will it be ok to run these as on the A5 or will the -4% difference in diameter have a really noticible affect on speed reading and mileage, gearing etc to the point that I shouldn't use them?
TIA