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Rear wheel spacer ?

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Tampa T-Type

New Member
Joined
Jul 17, 2005
Messages
153
Just installed 275 15 50 rears and am getting a lilttle rubbing at Wot upon takeoff. I need to add a 1/2 spacer and was wondering has anyone done this if so how hard is it to remove the studs and reinstall. Do I need a press, removing the axles what do I need to put it all back together. Ie gasket, Clips and what type of fluid. Oh how much of a PIA factor. Is this the way to go and no I'm not going to change the rims any place for these parts besides NAPA.
 
just put on old lugnut and tap with hammer they are splined in so when you get new studs you put in and install lugnut and tighten up with wheel off and it will draw it in
 
lessons learned

it would be nice if you told others what backspace your rims are. 275X15 can easily fit under the fender and not rub with a 3.5 backspace and probably 4" too. if you let others know the rim size and backspace of your rims, maybe a few of the constant questions about "what size tires can I fit" will be answered here.

lpaulabbott gave you the directions to replace your studs with longer ones. in the past I would also use a "glue/sealant" on the spacers to keep them centered on the rim. yes once the wheels are tight the spacer won't move but they are drilled with larger stud holes and they can move around when you put the tire/rim on. you can also get the wheels balanced on the car. :cool:
 
Factory rims

They are 7" factory rims I do not know the backspace. I think 12mm x 1.5 is the stud size, are there spacers made that do not require new studs. There is no way to add 1/2" to the lenght without removing the hub. Checked some web sites and came up cold.
 
hmm ive got 275 50 15 on my gn and i get no rubbin at all, with factory rims. are you sure your rearend isnt walkin just a little to the side allowing it to rub on the inside. where is the tire showin rub marks on the shoulder or the sidewall?
 
Nothing major

Frame shows scuff marks on both sides, more on drivers. I did not see any rubber missing on the wheels.
 
Try a 1/4" spacer and use with your factory lugs. There are different spacer thicknesses at Summit. Try the thinnest and work your way up if you have to.
 
When talking about 275's and rubbing, axle centering is only one thing that needs to be considered.

*Nitto 275/50's are narrower than everyone elses and are less likely to rub on a GN wheel. MT and BFG's will more than likely rub on launch and around high speed corners like off ramps with stock GN wheels.

*275/60's are a little narrower than 50's and will usually rub the frame less on the same wheel.

*T-type wheels have slightly less backspacing than GN wheels and will rub slightly less.

*Aluminum Drums will get you another 1/8" of backspacing.
 
i got bfg and they look close but never rub. check out yer bushings in yer control arms, they may be lettin yer rear end squirm a bit.
 
Adding 1/4 or more?

If I add a spacer will the studs need to be changed? I read you need at least 7 threads of nut but will this not affect the way the nut grabs the wheel. I see they make a spacer that has the studs attached and uses another nut to hold it in place. Any feedback!
 
1/4" should be fine with the factory studs. I wouldn't go more than this without longer studs, though.
 
Anyone use these?

hub centric spacer on ebay $69 + 12

What if you pulled the studs from the spacer and used 3 inch ARP studs straight thru? I think that's what I'm gonna try since my 28x9's rub on stock T wheels. I also have non-aluminum drums (thinner). I have to use spacers right now to keep it from rubbing too bad.
 
As far a strength/protrusion question. For max strength out of any bolt it must protrude 1/2 the dia of the bolt past the top/outter face of the (lug) nut. That is based on strength.Check the rules or with tech as far as track time goes. :cool: The duel pattern spacers work well because the main stress comes in shear but if not made correctly they can fail, in a massive way, during high "G" cornering.
 
Try www.skulte.com for good information and advice on your situation. It's my understanding that adding more than 1/4" inch spacer to your existing studs is not a good idea. They will explain why and show you your options.
Good luck.

MLH
 
Powder said:
Try www.skulte.com for good information and advice on your situation. It's my understanding that adding more than 1/4" inch spacer to your existing studs is not a good idea. They will explain why and show you your options.
Good luck.

MLH

Yeah I picked up a set of hub centric bolt-on spacers. My idea is to use my ARP 3 inch studs. Also I'll press out the studs on the spacers. Then bolt the spacers down with the supplied bolt as they want you to. Then using the remaining length of the ARP studs, also mount the wheel. I think it will be much stronger then using slip on spacers b/c it is hub centric to senter the wheel and the spacer is bolted to the axle. I can't spell center either.
 
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