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Figured I better update this since I recently got a thanks notification. I'm now running 305's with little wiggle room. Keep in mind that's with a 10" wide rim with 5" of backspacing.
Looking at your pictures it sure seems like no matter the backspacing your going to have trouble, looks like it's going to be rubbing on both sides or damn near even with perfect backspacing. What's the overall width of the tire vs wheel opening including the sidewall pucker? Backspacing is one...
My apologies Hunt, I knew he wasn't going anywhere close to the same direction as me so I was only pointing out that if a 12" tire will fit with 5" BS then his 275's on 4.5 should be fine. Wasn't aware of a big difference between the 2 cars? Goon and I were swapping rims and tires back and forth...
With most rim offerings being just shy of a correct fit I can see adding 1/2", what your suggesting is way to much IMO. The farther away from the mounting surface you get the more stress you put on the studs, I wouldn't do it. Can you go to a wider tire and less shim?
Agreed, that's why I put this out there. Some may have never taken the time to understand, maybe just showing the simplicity in doing so may encourage some to give it a try.
Since there's always a million "will these fit" threads regarding rims and tires I'll do my best to show how's it's done.
Just to clear up what the dimension look like here's a set of 18x9's with 5" of backspacing.
As you can see 9" in width is measured from inside to inside, typically a 9" rim...
Lighter??? Your kidding right??
I remember when I installed my lift and figured I'd throw my lightest car on it for the first test (Chevy Cruze), after I got done I read the data tag.... 4,000lbs!!!! It weighs more than my Charger! Cars nowadays.. luxury, collision reinforcements, airbags...
I don't buy it either, I look at today's bearings that come on modern cars along with the suspension components and see nothing that's more robust. Also I'm pretty sure my rim and tire package is lighter than or at least very comparable to the factory while maintaining the same OD. Another big...
This is such a simple thing to figure out on your own with just a straight edge and a tape measure. Take your wheels off and lay a straight edge solidly against the drum extending out to the wheel opening then measure from the back of the straight edge to the wheel lip, then from the back of the...
Yes, 18" X 8" in the front, 19" X 10" in the rear, both zero offset or 4" backspacing in the front and rear 5" in the rear. Thanks for the kind words, no regrets on the wheels.
Ramblers. When I bought these they were only available in custom form so yes I spec'd exactly what I wanted. Since then they've gained popularity and are now available in a cheaper cast rim.
The rule of thumb is thread engagement needs to at least equal the bolt/stud diameter provided your not threading into a softer/weaker material. I'd get a nut barely started then measure how far it threads on, if it goes on more than 1/2" your good... a little extra is good insurance.