Tundra Brake swap wheel help

N

Nicj

New member
Hi I am about to do the Tundra brake Caliper and rotor mod on my 4runner (231mm) but i still have the stock wheels for on my 99' they are the 6 spoke. I have seen on other threads that you can just grind the back side of the wheels to make them not rub.

My question is if I do this will I still maintain the strength of my rims or could this have the potential of being dangerous?

Thank you
 
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Any grinding will technically reduce strength. The little you have to do though won't do much more than change how easy or hard it is to balance your wheels depending in how/where and how much you grind. You can also use a small wheel spacer, and I believe some folks have even got away with grinding a tad but from the caliper vs the wheel.
 
Id do the suggestion [MENTION=83792]thebrandon[/MENTION] mentioned, use a small spacer. they make 1/4" ones which i don't think that will be bad. that should clear them id think. if not, get some hub centric 1 1/4 inch or 1" if they make them. i have the tundra upgrade and man what a difference stoping my t4r with 305 tires!!
 
I used a 1.5 inch spacer which gave me plenty of room my 231mm Tundra brakes. If you have the factory trispoke wheels then a 1/4-1/2" spacer should do the trick. If you don't want to run a spacer I would feel more comfortable grinding the caliper a bit. That is just me though.
 
The studs on the front spindles don't protrude as far out as the rear. I have open end lug nuts on my steel wheels temporarily and the difference appears to be around ½ an inch front to back.

The studs go all the way through the rear lug nuts but stop about a ¼" shy on the front.

I would try to avoid a ¼-½" spacer personally unless I found longer studs for the front.

With that said you might never have a problem. I just don't think I would trust it.
 
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Just my $.02, but I would not grind on the wheel or the caliper. I know there have been lots of folks that have ground the wheels with no issues, but the first time someone has a wheel fail that has been ground and the table will turn. I just don't think it is worth the risk.

The 199mm calipers will clear with no issues and you still get the massive Tundra rotors which is where the bulk of the benefit of this mod comes from.

Again, just my $0.02

Oh and just a couple pointers from someone who just finished.
1. go ahead a get new soft lines, they are cheap and it is a great "while your in there" item.
2. check your bleeders on the new calipers before you start, one of mine was pretty tight and it was only discovered when I started trying to bleed and now it has to be replaced.
 
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I got the .25" spacer. $13 at pepboys. If you don't get longer studs it's a pain to get the wheels back on. You always feel like you're going to cross thread it. If you pick up wheel studs for the rear and swap them in for the front it makes it easier. If you can take calipers to the parts store to see the difference it helps.

For reference my stock front studs were 47.5mm and my doorman brand rear studs that I replaced them with were only about 2mm longer. That helped a lot but if you could find something 51mm or so it would be much easier.

Also if you're going to do it I recommend putting the new studs in the freezer the night before you install them and then spraying a little wd-40 on the shank before you pull it through the hub. Makes them go in easier. An impact also helps.
 
I wouldn't grind either, the 5 stars you don't need to the 6 spokers you should just get the 199mm Tundra brakes, works well a lot better than the stick 4runner ones.
 
Just did mine. 13WL 231mm calipers
Grinded the wheels and the caliper
No issues with vibration or anything so don't feel wheel balancing is an issue
 
Any grinding is going to through the balance off. Its just a madder of how much.

I run hub centric 1.25" to clear but its a little over board. It also helps my tires clear the UCA when flexing. But with such a large spacer my tire likes to catch my limited fenders and I have torn them off before. Best bet is get spacers till you can get some rims with the correct offset.
 
JayRolla said:
Any grinding is going to through the balance off. Its just a madder of how much.

I run hub centric 1.25" to clear but its a little over board. It also helps my tires clear the UCA when flexing. But with such a large spacer my tire likes to catch my limited fenders and I have torn them off before. Best bet is get spacers till you can get some rims with the correct offset.
Click to expand...

Yup don't disagree...It makes total sense.
But on this truck after the install, you don't feel it. I'm guessing it's something to do with where the grinded material is taken off with respect to the mounting area to the hub, the fat tires vs. small rim size.

You definitely feel smaller balancing issues on low profile tires and larger rims.

No regrets with the 231mm...but definitely go 199mm if you want to avoid any grinding.
 
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