Running 19.5" wheels; what about the spare?
I've got a set of Rickson 19.5" wheels recently and currently shopping for tires. In the meantime, I've been reading up about the 19.5" option and it would seem Rickson's website does not find having...
Forum Discussion
Bedlam wrote:
Both tire sizes were the same physical diameter between my 18" Michelin LTX A/T2 and 19.5" DynaTrac PD890.
Unfortunately putting tape measure or slide caliper on tires doesn't work too well.
Rubber in tires is subject to sag under the load, change with inflation pressure and then be exposed to centrifugal forces.
That is why manufacturers list rpm for each tire model.
I have seen 2 tires with the same nominal sizes, coming from the same manufacturer and having 6% different rpm
