View Full Version : 15 inch rally wheels on a 4/7 drop
Guys I have been contemplating this for a while and found another set that is brand new with rings and centercaps. My question is about the 4 inch BS, does this mean that these wheels are a 0 offset or centered and will these work with my drop? I am currently running 454ss wheels with my rain gutters trimmed and front fenders rolled. I am almost sure I will have to cut or roll the back but won't know for sure until I pull my wheels and take some measurements.
01-15-2012, 05:20 PM
What size tires to you plan to run ?
I rolled 2 different sets of Rally's on my truck at 4/6.
1 set were all truck Rallys (15x7's I think) with a 225/235-15" combo and the other set were Van Rally's (15x6) on the front with truck Rally's on the back with a 225/235-15" combo. In both cases the 225's on the front stuck out or were very close to the fender lip edge and the rear tire & wheel combo were fine. If you plan to run 255/60's I doubt they'll work on the front and it's going to be a shoehorn fit on the rear.
01-27-2012, 09:34 PM
summit states -12mm offset, almost half an inch. Front spacing would be between 4.5" and 5" on that wheel. I have GM 15x8 rally wheels on my 94, they barely tuck on the back with the fenders rolled, they do not tuck on the front, that is with 235/75 tires.
01-28-2012, 12:53 PM
My 7" rallys rubbed occasionally with rolled fender lips and Belltech spindles. 6.5" van wheels would be a better choice on the front.
01-30-2012, 08:20 PM
I had the 15x8 Rallys. With 235/75-15's the front rubbed. I rolled the lips and still rubbed sometimes. Rear was fine. HTH.
01-31-2012, 07:18 AM
I believe that any stock 15" steel wheel from the 70's thru the 90's have zero offset, no matter what the rim width is. I've come to the conclusion, that when choosing any wheel to be used on any OBS lowered 2WD truck, it can only have 3" to 3 1/2" of offset on the outside, for fender clearance. So, none of the GM 5 x 5 steel wheels will have clearance. The only "factory" wheel that bolts-up with enough fender clearance, is the '94-'96 Impala SS wheel. And any aftermarket wheel you choose, needs the 3"-3 1/2" ideally.
I wasn't planning on getting them from Summit, if I decide to get rallys I would order them from Wheel Vintiques and custom order the backspacing needed. Maybe 8 inch wide for the fronts and 10 inch in the rear.
01-31-2012, 10:03 PM
I was thinking of going that route too until I priced custom backspaced stock type wheels. For the same money (or probably even less once bought center caps and trim rings) you could buy a really nice aluminum wheel.
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