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The additional 1/4" of backspacing will set the tires inward that much on each side. That probably won't be a problem unless you put tires wider than 255 on those wheels. I have 255's on aftermarket wheels with 4.5" backspacing on my '80 with no problems.
Those wheels seem to have the uni lug patern, may not be the safest choice.
They're Crager SS's, I've seen them on tons of cars over the years and never heard of any problems. Can't you just get a set of lugs with washers for them? Or is it just an all together bad idea?
I don't know of any problems with the uni-lug wheels, but given the choice between those or a single patern specific to the car, just my opinion. If the center hole in the wheel is the correct size, I would feel better about them.
I don't know of any problems with the uni-lug wheels, but given the choice between those or a single patern specific to the car, just my opinion. If the center hole in the wheel is the correct size, I would feel better about them.
I hear ya. They will be here tomorrow, so I'll have my tire guy look them over. I got them through Summit so I know I have a good return policy.
Those wheels seem to have the uni lug patern, may not be the safest choice.
They've been making unilug wheels for 30-40 years, maybe longer. I've used them before and never had a problem and I've never heard of anyone else having problems.
I'm just saying , why use them if there is a single pattern wheel available. I've used them before too, but just never felt they were the best choice.
Well, if you can do the engineering calcs and prove that it's a flawed design, by all means go ahead and enlighten us. But to tell someone they shouldn't use a certain product because you feel they're unsafe even though they're not is a little rediculous.
This is like all those people saying that the engine lifting plates that bolt to the carb flange on the intake is a disaster waiting to happen. But if they took the time to look up the tensile strength of a 5/16 bolt even if it is screwed into aluminum, they'll find that they're completely safe. By the way, the tensile strength (breaking strength) of a 5/16 course thread grade 5 bolt is 6,300 lbs.
This is like all those people saying that the engine lifting plates that bolt to the carb flange on the intake is a disaster waiting to happen. But if they took the time to look up the tensile strength of a 5/16 bolt even if it is screwed into aluminum, they'll find that they're completely safe. By the way, the tensile strength (breaking strength) of a 5/16 course thread grade 5 bolt is 6,300 lbs. 
