15" Factory Rims, 33" Dreams
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15" Factory Rims, 33" Dreams
Hey guys! This summer I'm taking the plunge and adding a Sonoran Steel 1.2 lift to my 3.4L '99 4Runner so I can start taking my off roading more seriously (not to mention the great looks the lift provides!!) Having decided this, I have been doing a ton of research throughout the forum on where to take my tire size once the BFG A/Ts that came with her wear out. Problem is, I was operating under the assumption that I had 16" factory rims since I have read so much about everyone else's 3rd gen SR5's coming stock with 16"s. I had seen azrunnin's wheels with this tire combo (here) and stupidly assumed I had the same rim size since they looked identical. I did a tune up today and rotated my tires and discovered that I actually have the 15" alloy factory 6 spoke rims. I had pretty much settled on going with the 255/85/16 tires once the lift was installed because they offer the 33" size I was looking for but they aren't as wide as the 285/75/16 which I have read eat up power and gas mileage and must be run at a lower psi. So, is there a comperable 33" BFG A/T that I can fit on the stock 15"x7" rims? I saw that there was a 33x9.50R15 A/T, 33x10.50R15, and there is also a 33x12.50 A/T that can fit a 15" rim. Is one a better option than the other on the 15" rim? I also saw that the 12.50s need a minimun of an 8.5" width rim. Is this BS and the 7"s will work or is that a huge problem? I'm concerned that the 9.50s will be too skinny. I'm also wondering about any rubbing issues that these tires could present. I won't be able to regear for a while and I'm trying to save the gas mileage. If anyone can offer some advice I'd greatly appreciate it. Thanks!!
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All your questions have been answered before in many threads (usually starting with "will x tire fit under my truck with y lift?").
If you're looking for a 33" tire then the 33x10.50 is the way to go because that's 33" (duh) and stock width so you won't have any side to side rubbing. With the lift you're installing I doubt you'll rub at full compression either.
If you're looking for a 33" tire then the 33x10.50 is the way to go because that's 33" (duh) and stock width so you won't have any side to side rubbing. With the lift you're installing I doubt you'll rub at full compression either.
#3
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Your power and gas mileage loss will be minimal. Hardly noticeable with a wider tire. You can throw some 33's on the stock rims but you might rub on one of your steering links. Would probably be better off with a 15x8 with 3.75" BS
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However, it all depends on what kind of driving you want to do.
I had 33x12.50-15 BFG Muds on my 2nd gen with a 15x8" steel rim and that ran perfectly.
You may not need to go that wide - there are pros and cons for each side.
One positive to not going that wide is you probably won't rub at all and you'll have a taller appearance.
It's all personal preference - however, I would not recommend running a 12" wide tire on a 7" rim.
That's just my opinion, though.
Fink
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Okay, thanks for the info guys. I was just concerned about the Runner driving like a brick. Glad to hear that no one has noticed much power loss.
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The width will have a marginal impact on it in comparison to that.
I did notice about a 2mpg loss when I went to the 33's.
Fink
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