BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
Just remember that while all that info is nice mrwog (& anyone else who may not realise!) it doesn't necessarily reflect the ACTUAL TIRE SIZES!! :lecturef_smilie:
It's only info based upon the NOMINAL Tire Size, ie the info printed on the sidewall and the sizes you entered into the table.... They are just a size chosen from a convenient 'Standardised Labelling Convention' agreement used across the International Tire Industry; they have little real relationship to the products that roll out of the tire factories, excpt that the size printed on the tire sidewalls is probably something CLOSE to that size...... But ACTUAL physical dimensions of most tires are often (usually!) somewhat different, usually because the various manufacturers use different methods for choosing which Nominal size they are going to print on the sidewall. Some use the naked carcass size, before they even start to add/form the tread layers; some use the 'full depth tread' size, taken after the tire has been fully assembled; others seem to just pick something that looks like it might be 'pretty close'; and there's probably a whole 'nuther set of different methods used too, including 'just an educated guess', and often even for different spec tires made by the same manufacturer!! :gaah:
So while those 'Generic Size Comparison' tables are handy tools to use as a GENERAL Guide with APPROXIMATE size comparisons & approx information re speedo differences etc to help you start your tire choice, if you are that concerned about tire sizes (& sometimes you need to be!) then you really need to look at the ACTUAL Specifications of each tire you're considering and compare measurable things, like the Rolling Diameter, or the Revs per Mile - only if they happen to match EXACTLY for different tire brands/spec tires even tho they are labelled with the same Nominal size, that probably means that the manufacturer/s has been even lazier than usual/most & is only publishing the Nominal Data instead of the Actual measured Tire Size! :banghead:
Oh, and BTW, while the info you posted is certainly worth noting, with the above caveatsSandee actually went ahead & ordered/bought tires a while back , and told us that at post #10 on the 8th of July. :thumbup:
:agree::agree::agree: ...... The most accurate " actual tire size " measurement is the " revs per mile " ( if provided by the tire maker ) .... the other is the actual circumference measurement of any given tire ..... Mike :thumbup: