Quote Originally Posted by EURO MY05
Just a quick question, if you have a set of 18" can you keep a 17" as spare and use it when one of the 18" is flat. If so, what are the speed limitation do you need to adhere to?
If the overall rolling diameters are the same, then you can use the 17". Because the weight of the 17" rim + tyre is different to the 18" rim + tyre, I'd still drive it at 80-100km/h max and get the 18" flat tyre repaired ASAP.