[XPY]

I purchased a 99 4Runner last yr, 4X4 standard, only had 60,000km on it. Assumed had the original TOYO tires still on it. Went looking for some tire chains and discovered I have 265/70R16 on the back & 265/75R16 on the front.
Is this normal?
Can you put chains on the front? To answer my own question "NO".

 

[Vato Loco]

To be honest, I would replace all four tires with an aggressive tread pattern so you don't have to get chains. I have a 3rd gen 4Runner with a set of 265/70/16 BF Goodrich Long Trail T/A's, so far I haven't had any problems with them in the snow. I almost got stuck once but that was because the snow was up to my headlights. :lol:

 

[Phi]

FYI- chains are for off road use only in Ontario.

 

[XPY]

I hunt every year in Pennsylvania, some of the non-maintenance roads ice up pretty heavily. Have seen a few 4X4 hung up on trees & over the shoulder, some of those drops are pretty nasty.
Stll the tire sizing doesn't seem to be factory and not sure if you can put chians on the front, not that I would need them.

 

[repinS]

You should be able to know your factory tire size by the tire inflation sticker on your driver's side door jam...

... if not, your owner's manual.