33x12.5x15's...cheap steal but... will they work | Ford Explorer Forums - Serious Explorations

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33x12.5x15's...cheap steal but... will they work

jake122288

Well-Known Member
Joined
May 17, 2009
Messages
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City, State
Pleasantville, iowa
Year, Model & Trim Level
1994 4-door xlt 4x4
i just got 4 33x12.5x15's givin to me and i was curious how well the 12.5 inch wide tire would work on stock rims... i did the soa lift and coil spacers and the sloped body lift so im sitting with 5.5-6" of lift (this thread isnt about the lift i did so please dont dogg on my choice to lift thanks). Im also curious on if the front tires will rub or not when turning? aftermarket wheels (15x8's) are in my budget come tax season but i can i still use these tire for now with my stock wheels? or will it cause too many issues? and they maybe used but for free i didnt pass it up =D a temp decent tire until i can afford new ones!

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I have 5.5" of lift and mine rub at full turn or a huge bump (huge only) driving down the highway its fine.
 






I have 5.5" of lift and mine rub at full turn or a huge bump (huge only) driving down the highway its fine.

but can i safelt mount them on the stock 15x7 wheels? temporarily until i get money for a new set of wheels?
 






I was running a set of 33x12.5's on stock width rims on my explorer, no rubbing issues (Although the back of the front fender well is trimmed, it DID have rubbing issues before this). that is with a 4" suspension lift.
also, i wouldn't recommend offset rims if you don't need them. if the tires fit on you're stock rims run it that way. offset rims = more scrub radius which leads to a number of problems, including more wheel rubbing while turning.

here's a video of said explorer
 






thanks a bunch...now i just gotta find a place that will mount them for me! and i figured inner fending trimming was in store...but thats not a big deal i was more concerned about alot of rubbing due to stock width wheels and stock set backspacing!
 






I ran that tire size on my stock rims for a couple years. It's not optimal, but it's safe. You may need to run a lower PSI to allow for full rubber-to-road contact.
 






now another question? how rough is the larger and wider tires on the a4ld..and with only 3.73 gears (limited slip in the rear0
 






Very rough... your tranny will go in less then a year if you use it allot.
 






Gear ratio wise, it will be like driving a stock explorer with common 3.27 gears.

3.73 with 33" tires (32.5") is equivalent to running stock tires with the 3.27 gears. Both put the RPMs with 50 rpms of each other.

That doesn't take into account the weight of the tires, just the tire size versus gear ratio.

~Mark
 






Gear ratio wise, it will be like driving a stock explorer with common 3.27 gears.

3.73 with 33" tires (32.5") is equivalent to running stock tires with the 3.27 gears. Both put the RPMs with 50 rpms of each other.

That doesn't take into account the weight of the tires, just the tire size versus gear ratio.

~Mark

so gear ratio i will be fine (i plan on regearing sometime soon though still) it will just be a bit more of a "pooch" compared to stock 235/75's and not have the low end power but will still be within stock rpm ranges? and the extra weight is what in the long run will end up causing the tranny failure and what not...what about the bearings/ball joints and other components like that? will this put a ton of stress on those? I've also been hearing going with a different offset/backspacing with new wheels will cause more damage than staying stock offset if i can? i would like to go with a different backspacing/offset (heard it as both not sure of the difference if any tho) to give me a slightly wider stance and prevent rubbing while turning. but is it worth it if stock wheels only rub a hair when turing?
 






Its a combo of weight and gear ratio that put extra strain on the trans.

As for what will larger tires/wheels put more stress on?

Primarily, its brakes, tie rods, ball joints and most commonly bearings.

The bearings on the Data 35 are close together, so its hard to keep them tight. When they get loose they will go bad fast, and if you don't keep up on it you can ruin a spindle.

For ball joints, keeping the off-set the same as stock (or close) will help them last.

Tie rods wear faster due to the extra weight and width (contact patch).

Brakes, well, thats extra weight rolling.

~Mark
 






Its a combo of weight and gear ratio that put extra strain on the trans.

As for what will larger tires/wheels put more stress on?

Primarily, its brakes, tie rods, ball joints and most commonly bearings.

The bearings on the Data 35 are close together, so its hard to keep them tight. When they get loose they will go bad fast, and if you don't keep up on it you can ruin a spindle.

For ball joints, keeping the off-set the same as stock (or close) will help them last.

Tie rods wear faster due to the extra weight and width (contact patch).

Brakes, well, thats extra weight rolling.

~Mark

thanks for explaining that mark i now understand it all better! and thanks to everyone else for your input and advice. they are now mounted and on the truck and i love the look...but wasnt able to take them fro a spin yet due to not getting my fuel pump today as i expected! thanks again guys
 






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