225/70/15 to 265/75/16 - regear?

[Washington4R]

quick question for the board. i have been a long time reader, but haven't yet posted. i tried searching but didn't come up with anything, hence my first post. forgive me if this has already been discussed.

i have a 2000 SR5 4Runner 3.4V6 4x4. the sticker on the door panel says that my correct tire size is 225/70/15, but when i bought the truck it had 265/70/16 deuler h/ts - which is what i thought were standard on the 3rd gen 4Runners. i recently bumped up the tires to destination a/ts 265/75/16.

my question is, does anyone know what my gear ratio likely is? i thought 4:10 was standard. and if indeed my truck did come factory with 225/70/15s, how big of a problem is it that i bumped up to 265/75/16s? do i HAVE to regear up to 4:33 or even 4:56 to not cause permanent damage to the tranny?

any help the board can provide would be much, much appreciated.

 

[Appntr]

I have a 99 SR5 Sport w/ the same tire and size. They have been on for 24k miles and I havent had any problems whatsoever. Just did the deckplate mod and ISR removal mod yesterday and it made a noticible difference, if you dont mind the noise w/o the silencer.

 

[mtnracer]

I believe the 3rd gen had different tires depending a trim level and year.

The base had the 225s. Others even had 31/10.5/15s. I think late model 3rd gens had 265/70/16s.

This could also be a factor of engine size. Remember that 1996-2000 had a base 4 banger. As of 2001 all 4Rs had the V6.

 

[Washington4R]

225/70/15 to 265/75/16

mine has the 3.4L V6, does that make a difference on what size tires they would have put on it? I am just not sure why the sticker on the door would be different than the tires on the truck, but i have heard that most, if not all, 2000 V6 4x4 came with 265/70/16s.

 

[mtnracer]

Re: 225/70/15 to 265/75/16

mine has the 3.4L V6, does that make a difference on what size tires they would have put on it? I am just not sure why the sticker on the door would be different than the tires on the truck, but i have heard that most, if not all, 2000 V6 4x4 came with 265/70/16s.

The previous owner probably upsized the tires from what was mounted at the factory.

 

[Washington4R]

225/70/15 to 265/75/16

yeah, i was thinking that, too. but, from doing a lot of reading here, it seems like all of the 2000 SR5 V6 4x4s came standard with 265/70/16s. i wonder if that's not the case?

and if my truck did indeed come with 225/70/15s from the factory and i am not at 265/75/16s, does that indeed mess with the gearing and tranny?

 

[mtnracer]

Re: 225/70/15 to 265/75/16

yeah, i was thinking that, too. but, from doing a lot of reading here, it seems like all of the 2000 SR5 V6 4x4s came standard with 265/70/16s. i wonder if that's not the case?

and if my truck did indeed come with 225/70/15s from the factory and i am not at 265/75/16s, does that indeed mess with the gearing and tranny?

I would not worry too much about the tranny or gearing but your speed is probably not showing correctly. You can compare the tires here:

http://www.miata.net/garage/tirecalc.html