Morning all (EST),
Ok so I'm not new to the forum scene but I am to working on my 'runner. I've got a 2001 4Runner with stock (265 70/R16) tires and they are in need of replacement. I'd like to go as larger as possible without a lift. How big can I go? I have done some searching and browsing through this forum and the newbie forum and either the answer is there and I'm just too noob to see it or I haven't seen it at all. Thanks in advance for the help.

Andy

 

I think I have read in a few places that a 265/75 /16 is the biggest you could run without rubbing.

 

welcome aboard the forum

a 70 series is actually a wider tread -9" versus 8.5 for a 75

a 75 series is a "taller" tire

I run 265/75/16s with a 1" lift up front (881 springs) and still encounter some rubbing of the front mudflaps. If you don't like the idea of running without mudflaps or hitting them in sharp turns or in reverse, stock may be the best way to go. (each year is slightly different-I am a 99)

a LT tire in stock size may give you a better or worse ride than a P series tire depending on what you are looking for in ride comfort or trail capability.

Have a tire dealer show you a side by side comparison-some say it is a subtle size difference-others think it is huge. Be sure they can mount one and check the clearance if that is of concern to you.

 

Hm...70 series a wider tire?

Wouldn't two 265 size tires be exactly the same width as the 265 defines the section width (in mm) when mounted on the proper sized rim?

The 70 designates that the sidewall aspect ratio is 70% of the section width...so 70% of 265mm = 185.5mm or a section height that is 7.3" tall. 75 series gives you a 7.82" section height.

4Lo.com has an awesome tire calculator HERE Plug in the two different tire sizes and see what you get.

 

In most cases, the only things that tends to rub is internal plastics; even if you get the tire a little too big, you can usually do some minor wheel-well modifications to accomidate.

 

I see your point when you use the tire calculator link you posted the only thing that changed from a 265/70 to a 265/75 is the overall diameter-from 30.6 to 31.6. However I just had one Dunlop Grandtrek size P265/70/16 in my garage and took measurements to respond to another member. I was measuring width of the tread only and not total circumference of the tire. The Dunlop tread width was 9" and my Nitto Terra G's were only 8.5.

So the more I talk about this the more confused I get.... To follow through on your findings MunkeyTX- I saw no change for section height on the tire calculator with both saying 7.3 for the section height. Perhaps there are differences between P metric series and LT series tires, as I know there are differences between manufacturers even when referencing the same tire size.

So my point is don't just judge by the tire size-be sure that whatever you buy can be mounted up front and turned from side to side and run in reverse without scraping your mudflaps.

If you just do not care to run mudflaps at all upfront then 265/75/16 will likely fit you just fine....