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Rear 10.5 wheels 315x35 rubbing cause, what to watch for and fix.

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3.4K views 9 replies 3 participants last post by  dynaraton  
#1 ·
This is a screwy problem were some tires of the same size rub and others don't. My staggered rears are 10.5 wide with a 27mm offset which is the only off set I could find in a Hellcat type style. Note photo of hole caused by rubbing. First I went to 3mm spacers almost cured the issue. Then went to 5mm spacers [ .200 " ] . Yet I suspected there was another issue in play ! Tires are Cosmo brand and have a 5/17" [ 8mm ] side bulge, see photo of measurement ! Ha so that is the issue problem. I'm told the only tire that has a straight sidewall is the M/T line up in 20" ? Also a 11" wide wheel may solve this issue ?
 
#2 ·
I currently have 315/35/20 nitto NT 555 G2 on the rear of my 2020 scat pack. On the rear I have Devil rim reproductions 10.5 rim with a +22 offset. They have a slight rub in the same place you have shown, but I don't see any marking on my tires so I'm leaving it as is. Its my understanding that tires vary in width from manufacturer to manufacturer. Clearance all comes down to the wheels offset.
The issue I have with spacers is the larger the spacer the chance is good the hub will no longer be carrying the load or centering the wheel the lugs will.
 
#3 ·
Believe it or not I didn't see any tire rub marks on the tire till I rotated it completely. The rub was where the tread meets the side wall. Be careful as rubbing can cause a tire to come apart. Spacers with a center hub fit are the ticket. I was told that 6mm is the max spacer you can use ? Note while I was at this I wire brushed and painted the rusty axle thread.
 
#4 · (Edited)
I have 6.35 mm (1/4") hubcentric spacers on my rears specifically made for the Challenger/Chargers etc (5 holes at 115mm). Everything is fine. It looks like yours is a universal but that will work too. I have been running spacers for 30 years no issues. People think the hub lip holds the load of the wheels which is untrue. Same principle of screwing a piece of wood to a wall - there's nothing supporting the load on the bottom. If the wheel load was sitting on the hub lip, we would have crazy vibrations. As long as you have enough lug length to secure the rim tight, you are good. Maximum 1/4" is a good rule of thumb unless you get into adapters which have their own lugs and centering lip (you can go much bigger).
 
#5 ·
I have 6.35 mm (1/4") hubcentric spacers on my rears specifically made for the Challenger/Chargers etc (5 holes at 115mm). Everything is fine. It looks like yours is a universal but that will work too. I have been running spacers for 30 years no issues. People think the hub lip holds the load of the wheels which is untrue. Same principle of screwing a piece of wood to a wall - there's nothing supporting the load on the bottom. If the wheel load was sitting on the hub lip, we would have crazy vibrations. As long as you have enough lug length to secure the rim tight, you are good. Maximum 1/4" is a good rule of thumb unless you get into adapters which have their own lugs and centering lip.
Source for your spacers ?