Then your tires will definitely rub against the fenders..........if spacers are required for your tire/rim combo, then only use thickness that is needed to clear both inner/outer wheel lips. With our Mav/Comet, what tire/rim combo may fit perfectly on one car, but will have clearance issues on another, unfortunately that is all too often the case...... David
I have 15x8 rims with 4" backspacing. I have 255/60/15 on the rear and 225/60/15 on the front. On the rear, the drivers side was extremely close to the bump stop, the metal towards the tire. On the pass side, I have atleast a 1/4" to 1/2" from the metal on the bump stop and springs. On the front, pass side clears fine bump the tire rubs the frame on a hard left. I had to take a grinder to both spots on the driver's side. Rear suspension is stock. Only thing not stock on the front is the roller perches for the springs. Hopefully this helps in your decision making.
A few thoughts about wheel spacers. Slip on spacers are less likely to cause trouble than bolt on spacers, but they only work for minor adjustments. If you use slip on spacers, be sure to check your lug nut engagement and use longer than stock studs if needed. For thicker spacers, you're going to use bolt on spacers. Don't cheap out on them, buy good quality. If using bolt on spacers, be sure to get hub-centric spacers and use a centering ring if needed to get a proper fit. with either style, be sure to retorque after a few miles of driving. That should be done with alloy wheels anyway, but it's especially important with spacers.
The above post is all good information, but better yet, get wheels with the optimum width & back-spacing. Why spend time & money rigging up something that will "work" rather than just doing it correctly from the beginning? Yeah, wheels cost money, so sell the wheels that have the incorrect specifications, and pony up (or save up if necessary) for a set with the proper specifications. I did a lot of research before buying my current wheel & tire combination. Front wheels are 17x7" with 4-inch back-spacing and 225/45-17 tires. Rear wheels are 17×8" with a 4.75" back-spacing, however this car does not have the stock width rear-end. It is 1.5" wider overall so the 4.75" back-space is just perfect. Rear tires are 255/45/17. Not super wide, but nice & beefy. For a stock rear-end width, a 4-inch back-space is pretty ideal...
