Tyre difference

Depends how worn they are, but I would probably run it in the front lhs if you haven't got constant 4x4. Put the figures into this & see what you reckon & make the decision for yourself. Otherwise ,don't be so miserable & get a full set of the same size.

www.1010tires.com/

Just doing some maths and I reckon your 7mm difference would equate to somewhere around 80 meters difference if you drove 100km. The average 850mm circumfrerence tyre rotates 117,647 times in 100km, more for smaller circumference tyres. That's a fair bit of wind up. EVERY DAY. On a two wheel drive you may get away with it but when the hubs are in or in a constant 4x4, wind up would be occurring.

I am in no way a mechanic to give sound advice, but my maths tells me it would not be an option FOR ME. Are you in Brissy? if so drop me a line as I have been keeping 3 old cruiser tryes for a trailer one day but that looks like it will never eventuate so the three, fair (maybe 25%, been a while since I seen them), 275 70 16's may help you complete a set. Not for free but I am reasonable.

Cheers Trevor. dieseldrifter at bigpond dot com

dont put the different ones on the back if you have an lsd.

Whack em on the front !!!

You will never know the diff !!! Constant 4x4 maybe ?? but otherwise, just do it eh !!!!

its funny how people will put links up for web sites that tell you not to do it because of diff wind ect.
what a load of crap ill give you 2 exaples of why you shoul not worry about it.
(1)every time you turn a corner be it front or rear one wheel will always turn more than the other so theres no problem with 7 mm.
(2)you buy a new/used car with new tyres you r running around and there nearly worn out geez ive got a puncture ill have a look at the spare oh my god its a brand new tyre im pretty sure its more than 7mm bigger in diameter than the ones iv got on the car and i remember reading on exporeor that 7mm is no good for diff wind ect what do i do.
what do you do?
you fit the tyres you got for nix thats what you do
how often do you read about people on a trip that have a blow out ?
they dont go to a tyre shop and ask for a half worn tyre no they buy a new one and dont have any problems.
cheers mate

I'm not good in math but .... WHAT ABOUT YOU INSURANCE? My insurance will cover my car only if I'm using 4 identical tyres (in size) ....
I will think twice before driving a 4wd with 3 tyres (same diameter) + 1 different in size ....
Luca

Stefan, aren't the tyres all the same diameter? The 265 or 275 is the width. Rus.

The difference in diameter is about 14mm. (10mm x 0.7 x2) which works out at about 1.8%. Up to you. You'll only do damage when 4wd is engaged in bitumen, which should be never. Its technically illegal, so I'd trade the 275 and buy another two 265/70's so I had a spare as well.

Gday Stefan

I wouldn't run different tyres, I ran one of a different brand for a short while with the same design size - (all 265/75) and the car handled like a pig - it was on the back, so maybe the front would be better ?? although I was always told the best 2 tyres you have should be on the front. Sounds like good advie to me, but there are plenty of contradicting opinions around, most of which have some merit

Cheers Andrew

I thought that it was simply illegal to have different tyre sizes on the same axle. Doing so would void insurance in case of an accident.