widening a 9in rim

**devildogws6** · 12-07-2012, 12:57 PM

I will be ordering the RPM 505 rims later this winter only come in 9in wide if i widen the rim to 10.5 or 11 should i get a special or differnt backspacing or offset to prevent any rubbing issues on the inerside?

**2002ssslp** · 12-07-2012, 03:54 PM

I would check with the company that is doing the work. I don't think you can just split and widen a rim without changing the backspacing. They should know what to do when they widen the rim.

**98TransAmWs-6** · 12-08-2012, 01:36 PM

I was told by weldcraft wheels that the amount you widen a wheel changes the back spacing by that much.

**Spikito** · 12-09-2012, 10:35 AM

yes thats true unless you have really deep dished rims and make the cut in front of the spokes....

**devildogws6** · 12-10-2012, 03:06 PM

So I should find a place that will widen rim first before I purchase wheel? I believe the dish is 3" well the lip is, thanks for the input.

**tatertot91** · 12-10-2012, 04:37 PM

For the cost of buying those wheels and having them widened i'd seriously consider trying too find a nice set of wheels that are the width you want. Not a bad looking wheel, but once you start spending money to ship them out and have them widened you could probably pick up nicer wheel imo. If you do decide to get them widened, i'd go with weldcraft. Heard nothing but good things about them.

**cammed goat** · 12-10-2012, 04:57 PM

^^this.

**35th-ANV-SS** · 12-10-2012, 09:12 PM

Originally Posted by tatertot91

For the cost of buying those wheels and having them widened i'd seriously consider trying too find a nice set of wheels that are the width you want. Not a bad looking wheel, but once you start spending money to ship them out and have them widened you could probably pick up nicer wheel imo. If you do decide to get them widened, i'd go with weldcraft. Heard nothing but good things about them.

This is a good point. I bet shipping wheels alone is very expensive.

**98TransAmWs-6** · 12-14-2012, 12:37 PM

Originally Posted by 35th-ANV-SS

Originally Posted by tatertot91

For the cost of buying those wheels and having them widened i'd seriously consider trying too find a nice set of wheels that are the width you want. Not a bad looking wheel, but once you start spending money to ship them out and have them widened you could probably pick up nicer wheel imo. If you do decide to get them widened, i'd go with weldcraft. Heard nothing but good things about them.

This is a good point. I bet shipping wheels alone is very expensive.

Yes it is I shipped my 4 ws6 wheels with tires and it was $230 from VA to Oregon.

**devildogws6** · 12-14-2012, 01:27 PM

the only other close rims i saw are the Fiske fm10 that would allow my 11inch in the back but damn $800 a rim!!! Yikes

**tatertot91** · 12-16-2012, 04:04 PM

After shipping back and forth and widening you'll be pretty high in price. I'd be on the lookout for some lightly used fm10s, you won't regret it.

**devildogws6** · 12-31-2012, 03:49 PM

Originally Posted by tatertot91

After shipping back and forth and widening you'll be pretty high in price. I'd be on the lookout for some lightly used fm10s, you won't regret it.

if you ever see any let me know lol

**fjm1235** · 01-30-2013, 06:45 PM

I have the same challenge. My current wheels are only made in 18 x 9, but I need to widen them to 10.5 to gain better traction. The current 9" wheel only allows me to run 275's all around. I do not want to tub the wheel wells. Is anyone running 18 x 10.5 in the rears? Looking to run 305 drag radials for the strip & 315's for the street. Any guidance is appreciated.

**98TransAmWs-6** · 01-30-2013, 07:25 PM

Originally Posted by fjm1235

I have the same challenge. My current wheels are only made in 18 x 9, but I need to widen them to 10.5 to gain better traction. The current 9" wheel only allows me to run 275's all around. I do not want to tub the wheel wells. Is anyone running 18 x 10.5 in the rears? Looking to run 305 drag radials for the strip & 315's for the street. Any guidance is appreciated.

I have 20x10 in the rears with no issues. I have a couple of inches to spare also.