Thread: Tyre question

Originally Posted by cambo

That is only another 5% extra in profile.
Surprisingly that makes it 3.3% different so your speedo will read slower than you are actually going.
Max allowable without certs is 5%.

Tyre size meanings
245/75R16 = 245mm width of tyre / 75% of width is the profile/sidewall height R16 is of course the rim diameter.

A mint tyre size calculator to use is Tire size calculator
We use it a lot at work.

Thanks for that cambo that calculator is pretty darned good, last time I ran my GPS in the bighorn I had the screen set to tell me my actual speed and was doing 97 kph when the speedo was saying 100 Kph so this should bring me upto what my speedo should be reading at 100K if I go for the 75 profile correct me if I am wrong.