speedo calibration

[j_umen]

I just bought a 2007 SR5 4x4, had the suspension lifted, and put on 33" tires. Now I am planning on installing a speedo corrector to offset the 7% increase in tire size.
I have a question regarding the traction and safety systems that receive input from individual sensors on each wheel. These individual wheel sensors will not receive a corrected signal and I wonder how the performance of the truck will be affected.
Any input on this topic or advice on speedo corrector install for a 4th generation 4Runner is appreciated .
I've already downloaded wiring diagrams from
the TIS site.
Thanks!

 

[ajjaaron]

Got any picts of the new lift and tires?

 

[MW 4Runner]

I assume you saw THIS THREAD...

It might help you, I dont know. You could PM that guy and see if he solved the problem.

 

[j_umen]

Lift pictures

Here is my lifted 2007 4runner. Dobinsons shocks and springs added 3" to it.
Lift was done by Westcoast Cruisers
http://www.westcoastcruisers.com/

 

[MW 4Runner]

Looks great. I like the blue/yellow... really stands out nicely.

I'm assuming those are 285's right?

 

[j_umen]

Tires on lifted 4Runner

You are correct. The tires are BF Goodrich A/Ts
285/70 R17. They are great, but they do rub against the frame when turning hard, a problem that I need to fix. Still deciding the best way to do this.

 

[MW 4Runner]

Re: Tires on lifted 4Runner

You are correct. The tires are BF Goodrich A/Ts
285/70 R17. They are great, but they do rub against the frame when turning hard, a problem that I need to fix. Still deciding the best way to do this.

Wheel spacers would correct that problem... either that or new aftermarket wheels. When I upsize to 285's I will probably get wheel spacers unless I find some wheels I actually like.

 

[j_umen]

wheel spacers

I've heard that wheel spacers create their own problems, but that may be the way I have to go. I really don't want to throw away my OEM wheels with the air pressure sensing valves.

 

[Duc Hunter]

Poor quality ones do, as does not properly using them. I ran them on my FJ40 for years and never had an issue. There has been lots of discussion here about them. You should be able to find out which ones to get by a search or two.

I am surprised you did not have to do any trimming, removal of mud flaps etc. Everyone here seems to say 285/70 of any flavor require that, at least a little. Have you compressed your suspension all the way yet?

 

[j_umen]

wheel spacers

You are right about mud flap trimming. When the suspension is not compressed, it just barely clears, but it will rub under compression. An easy fix that I will do once I solve the main problem of the wheel hitting the frame, is to use a strip of bent metal to hold the mud flaps farther away from the tire.