my tj`s front wheel is currently running on a 110/70/17, just read it on a 4dx manual correct size is 120/60/17.
Does it make much difference being on a 70 profile like affecting the speedo reading ? cheers

The 70 profile isn't so much a problem - I run one myself
But it should be a 120 not a 110 on a 3TJ.

Make sure your running a 3.50 width rim... if so it should be a 120 front...if your running a 3.00 width front rim it's not std 3tj/4dx size but 110/60 or 70 profile is right for it.

Cheers guys, i`ll check the rim size tomorrow. am pretty sure seeing numbers 3.50 stamped on it.

front wheel is marked 17xMT3.50. Be replacing it with the correct tj size tyre 120 instead of the 110. It needs changing anyway as it had an advisory note on the tread getting low couple of weeks ago on the MOT.
Ty very much again guys