KSTacoma

I'm going to be getting the Mickey Thompson "classic lock" wheel in a 15x8 and the backspacing is 3 5/16 and the offset is -28mm. If i want to run 33/12.5 will that wheel a.fit and b. give me enough clearance so i dont hit the upper a arm?

Flamedx4

What rig?

If memory serves, you gotta have 3 3/4" backspacing for 85 and older, and can use any backspacing (but 4 1/2" is the correct offset) for 86 and newer. If you put 3 3/4s on 86 and newer rigs they stick out more. If you try to put 4 1/2 offsets on an 85 or older they won't even go on - they will hit the steering arms... You can run 8 thru 10 inch rim widths with 33x12.50s.

KSTacoma

hey thanks so much for replying, its a 98 tacoma w/fabtech coilovers, so based of what ur saying i'd be ok? also how would those wheels look according to the backspacing, they wont stick out like a..excuse my rasist remark..but "mexican" truck, u know?

3.4v6

im running 33/12.5 on my taco with a little bit more than 4 insches backspacing. i never hit the uppper control arm but i did rub a little. but that was all fixed with some cutters and a sledge-hammer.

Flamedx4

I have 35x12.50s on 15x10s with 4 1/2 backspacing and they don't stick out much.
http://www.pcez.com/~pcollins/Toyota...P4280015sm.jpg
http://www.pcez.com/~pcollins/Toyota...s/P4280018.JPG

BajaRunner

Pardon my ignorance, but, what exactly is backspacing?

Fink

I've got 15x8 Tech1 Rock Crawlers wrapped in 33x12.50 BFG M/T's with 3.75" and they stick out a good 2"...hope that helps.

Do a search on here to find info on backspacing...its been talked about A LOT.

Fink

KSTacoma

you're guys rigs are badass!!!!!!!!! thanks so much for the help and imput! i'm gonna do it i think. One more question, will that 3.33 backspacing cause any extra wear or strain?

Flamedx4

<<what exactly is backspacing?>>

Simplest way to visualize it. Take a wheel, put a ruler across the rim on the inside edge. Take another ruler and measure from that ruler (the rim edge) to the mounting flange. The lower that number is (assuming the same size rim) the more the wheel sticks out. If you took 2 rims and measured from the inside rim edge to the flange and one was 3 3/4 and other was 4 1/2, the 3 3/4 backspaced one would stick out farther when put on the truck. "Offset" is a totally different method of measuring and is not the same as Backspacing.

<<will that 3.33 backspacing cause any extra wear or strain?>>

Well, yes. It does.
But not enough to really worry about - it's a Toyota. As you may have noticed, there are LOADS of Yotas with big tires and outset wheels doing just fine. If it was a Nissan or an S10 Blazer it would fall apart quickly - they can barely hold up when left stock <grin> (No flame wars please...)

KSTacoma

lol, amen to that, this is sweet i hope these rims look good on my truck, thank you so much for taking the time to help me out!!!!

Fink

Thats what we're here for...good luck on gettin those wheels on there man, post pics when you get em!

Fink

KSTacoma

BAH ONE MORE QUESTION lol, about gears, will i be ok w/stock gears? i have a 2.7l. how will going bigger affect it?

Fink

What size tires are you running now? If you're going from stock all the way to 33's then yeah...you're gonna notice a difference but it won't be unbearable.

Fink

KSTacoma

right now i'm running bfg 32x11.5 a/t's

Flamedx4

Going from stock to 33s is huge. Even though the 2.7 is a great motor, you'll really notice a difference. It's driveable though, you'll just need 5th gear less often. But since you're already running 32s, going to 33s won't be a big step for you. I know it's a pile of cash, but changing to 4.88s when you can would be an expense you would never regret.

KSTacoma

Im just worried about doing THAT much work to my truck it still only has almost 70k. If i did get gears i have concluded 4.88 would be the way to go. What is the dependablility of these aftermarket gears compared to stock? are they good for highway use? also what if one day ineed to turn back to stock, what do i do? also how far off will my speedo be and how can i fix it?

Flamedx4

If you have 4.10s now and you end up with 33s and 4.88s your speedo will not be off. I did my lift/tires/gears/TRD posis both ends at 48,000 miles. I ran them until 172,000 miles when I sold the 4Runner. It was, with that mileage you can well imagine, my daily driver. No worries. Just be sure and get name brand gears, there are some cheap ones out there that may or may not be as durable. Going back to stock is the same process, put the stock gears back in and set em up. (In other words, the same labor charge all over again.) Probably as cheap to just buy new gears again for the new vehicle and leave the old gears in the old truck when you sell it.

KSTacoma

badass okay, well i'm trying to figure out what kind of rear end and ration ˟˟˟˟ i have lol i followed that link but on my code thing after A/TM there's a ĊĊĊĊing ? why would they put a question mark? god damnmit go figure lol it always happens to me. How can i find out now?

Flamedx4

You could do it the way it's been done since Jonah hauled lumber for the Ark with his Hilux.... Make a mark on your driveshaft (even better, tape a popsicle stick to it so it's pointing say, straight up.) Make a mark on a tire. Turn the tire slowly exactly one revolution and count the turns your popsicle makes. If you have 4.10s it will make a hair more than 4 revolutions for one of the tire. The difference between 4.10 and 4.30 is obvious, 4 and 1/3 revolutions, 4.56 would be a bit more than 4 1/2 revs, etc...

Flamedx4

I didn't mention that you need to jack up the tire you want to turn and put the trans in neutral, but if you couldn't figure that out you probably shouldn't be allowed out without supervision... <grin> Good luck!