Thread: Tyre size

You will notice that while the tyre is only 6 mm larger in radius the circumference is a whopping 37.7mm per tyre revolution larger.
Over just 1 km the larger tyre will cover an additional 15m!
Can't be good long term for your driveline.

Originally Posted by Grant052

Chaps, I'm currently running Pirelli Scorpion ATR 255/60R/18s on my Disco 3 and thinking about putting the D697s on BUT they aren't available in 255 18 inch, only 265.
I spoke to a bloke at Bridgestone and he said I could have all sorts of problems if I fitted the 265s.
What's the general opinion, stick with 255s or move to the 265s?

The tyre guy is a dill, 255/60/18 is 30.0", 265/60/18 is 30.5", you won't even notice the difference, the advantage is the speedo will be closer to correct


265/60-18 159mm 388mm 775mm 2435mm 411 0.0%

255/60-18 153mm 382mm 763mm 2398mm 417 -1.5%

Beat me to it Rich

Baz.