GunNut

First off, let me apologize if this is a repeat question. Unfortunately, I'm a noob at this and have tried to search for this topic. I guess you can say that I'm not sure how to address this topic correctly... which leads me to post.

Ok here goes...

I currently own an 89 Toyota 4Runner V6 and have upgraded the suspension to the Downey 2" lift. 26mm Torsion Bars in the front and Downey Spring Pack in the rear. Now my question is, would I be able to run 34's without rubbing or having to change gears? I've heard from a friend that I would have to change gears anytime I go bigger than 33's... is that correct? What would happen if I don't?

Sorry again if this is a noob question... hope someone can enlighten me.

Thanks everyone!

tc

Which tire/width are you looking at? Factory rims or aftermarket, and if aftermarket, what backspacing?

What gears do you have now? If it came with 31's and you have 4.56 or 4.88, you'll be OK, but acceleration and "pep" on the highway will be noticeably reduced.

I run 34x9.50 SuperSwampers on 4" BS steelies (AR767) with no lift, but they rub a little even after trimming the fender liner and beating the pinch weld. The wider the tire, the more problems you're gonna have.

GunNut

Currently, I'm running 265/75/16s, I'd like to get some 315's if possible. I'm not sure what the back spacing is on the rims, but they were initially on a Chevy. Is there something I can do to find out what the back spacing is? Oh by the way, the rims I believe are 16x8.


Again, I'm not sure. The truck is completely stock. When I bought it, it came with 31x10.5x15. So how will it affect my freeway driving? What should I expect. Will it be a total power loss?

Thanks TC!

tc

Ohhhh....you should search on 315/75-16 or something like that - it's popular on the 3rd gens, but not sure if anyone is running them on the older ones. Not many people running 16" wheels on the 1st and 2nd gens it seems. Aren't 315's about the same as a 35x12.50? If so, yo're gonna need a lot more than 2" lift ...

Take a ruler and put it across the back of the rim, then measure down to the wheel mounting surface. That's your backspacing. Less means the wheel sticks out farther.

If it has 31's and manual tranny, you've most likely got 4.56's. This is good as there are plenty of options for regearing (not so with the factory 4.88's)

You're going to lose quite a bit of power. It will still be driveable by all means, but you'll have to work the clutch more to get started, and downshift to (or hold) 4th a lot more than you used to. The upside is there will be less engine noise on the highway due to the lower RPM's. Fuel economy will suffer.

There was a noticeable difference when I went to the 33's, it is much better (even better than the stock 31/4.56 combo) since I regeared to 4.88.