Backspacing question - Jeep Commander Forums: Jeep Commander Forum
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post #1 of 11 (permalink) Old 06-27-2014, 04:48 PM Thread Starter
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Backspacing question

Hello. I am currently running 1.25" wheel spacers on my commander with the stock rims. I am looking at getting an aftermarket set of rims. What kind of back spacing would I need to get the same spacing from the aftermarket wheels without using the wheel spacers? Thanks.
JJ

2006 Commander
3.7L
2" Daystar lift w/ rocky road leveling spacer
BF Goodrich Rugged Trail 265/70/17
1.25" wheel spacers
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post #2 of 11 (permalink) Old 06-27-2014, 07:36 PM
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Well stock wheels are approx. 6 inches of back spacing and are 17x7.5's. So since your running 1.25 inch wheels spacers you pretty much have a 17x7.5 wheel with 4.75 inches of back spacing. If you could find a new 17x7.5 wheel with 4.75 inches of back spacing it would sit out exactly how your current setup is. However that wheel would be hard to find with those specs. You would need to find a 17x8 with around 5.25 inches of back spacing




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete

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post #3 of 11 (permalink) Old 06-28-2014, 08:35 AM Thread Starter
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cool, thanks for the quick reply. I appreciate it. i was thinking of going with either d-style, wagon, or soft 8's, they are what I like the best, which actually works out for me because I'm poor as hell right now.

anyone know where I can find the best deal on a cheap set of steel rims for my commander?

2006 Commander
3.7L
2" Daystar lift w/ rocky road leveling spacer
BF Goodrich Rugged Trail 265/70/17
1.25" wheel spacers
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post #4 of 11 (permalink) Old 06-28-2014, 08:39 PM
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Haha you live not far from me. I'm sure you've seen my jeep around. Steel blue metallic with the snorkel on 34's




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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post #5 of 11 (permalink) Old 06-30-2014, 07:36 AM
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Have you run into any trouble using wheel spacers?

On a live axle (Commander's Rear Suspension) changing backspacing on a wheel doesn't have much effect.

On independent suspension, changing backspacing on a wheel will change the suspension geometry, and "can" have a huge effect on alignment, handling, how the suspension reacts, and tire/suspension wear. Have you noticed any of that with the wheel spacers? Cause you will get the same thing with wheels with the same backspacing.

I don't know how much it effects the commander, I just know it "can" effect suspension geometry to the point it has very ill effects. Seen lots of complaints from other vehicles that have done and suffered ill effects, to bad handling, ride or constantly replace ball joints/other suspension parts or horribly uneven tire wear. I've also seen other vehicles where owners do it all the time and don't have problems or barely any problems.


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post #6 of 11 (permalink) Old 06-30-2014, 02:11 PM
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Quote:
Originally Posted by Mongo View Post
Have you run into any trouble using wheel spacers?

On a live axle (Commander's Rear Suspension) changing backspacing on a wheel doesn't have much effect.

On independent suspension, changing backspacing on a wheel will change the suspension geometry, and "can" have a huge effect on alignment, handling, how the suspension reacts, and tire/suspension wear. Have you noticed any of that with the wheel spacers? Cause you will get the same thing with wheels with the same backspacing.

I don't know how much it effects the commander, I just know it "can" effect suspension geometry to the point it has very ill effects. Seen lots of complaints from other vehicles that have done and suffered ill effects, to bad handling, ride or constantly replace ball joints/other suspension parts or horribly uneven tire wear. I've also seen other vehicles where owners do it all the time and don't have problems or barely any problems.
Many members run spacers and/or wheels with increased back spacing and rarely do we hear about serious issues with this as the cause.
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post #7 of 11 (permalink) Old 06-30-2014, 03:33 PM
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Quote:
Originally Posted by luckyse7ens View Post
Many members run spacers and/or wheels with increased back spacing and rarely do we hear about serious issues with this as the cause.
If we can get iluvny081 to confirm he hasn't suffered any ill effects, then we can probably safely say you can run up to 1.25" spacer/decrease in backspacing without any serious effects.

Yea, sure you can argue that changing the suspension geometry increases stress, but if the result is you have to change ball joints at 210k miles instead of 225k miles, that is a trade off that is worth it for most folks.

Some vehicles it can make a big difference and your replacing suspension parts every 20k miles, BUT it sounds like you've been monitoring others experiences / post better than I and the Commander is definitely NOT one of those vehicles.


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post #8 of 11 (permalink) Old 07-02-2014, 05:00 PM Thread Starter
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hi guys, sorry I havent posted, I have been away from my computer for a few days. I can say with 100% honesty that running my 1.25" spacers has not had any ill effects on the way my commander drives. only thing the spacers changed is, now my tires dont rub at full lock when stearing left or right. but however they do rub ever so slightly on the rear part of the inner fender when the wheels are turned at a 45 degree angle. but its sooo slight Its not a problem for me at all. I have not done the pinch weld mod and my inner fenders are completely stock. i wouldnt even know they were rubbing exept for when its raining outside and I turn around i hear a tiny squeaking type sound when the tire meets the plastic inner fender. to give you an idea of how slight the rub is, I have been driving around like that for over a year now and the inner fender has no marks on it at all.

07JEEPXK:
we actually met last year at the kwikfill on tworod and clinton. I had the silver commander.

2006 Commander
3.7L
2" Daystar lift w/ rocky road leveling spacer
BF Goodrich Rugged Trail 265/70/17
1.25" wheel spacers
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post #9 of 11 (permalink) Old 07-02-2014, 10:09 PM
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Quote:
Originally Posted by Mongo View Post
If we can get iluvny081 to confirm he hasn't suffered any ill effects, then we can probably safely say you can run up to 1.25" spacer/decrease in backspacing without any serious effects.

Yea, sure you can argue that changing the suspension geometry increases stress, but if the result is you have to change ball joints at 210k miles instead of 225k miles, that is a trade off that is worth it for most folks.

Some vehicles it can make a big difference and your replacing suspension parts every 20k miles, BUT it sounds like you've been monitoring others experiences / post better than I and the Commander is definitely NOT one of those vehicles.
I ran 1.25 inch wheel spacers for years and now wheels that sit out even farther than the stock wheels with spacers. Not one problem what so ever! You have been on this forum for a while now, where are you getting this info from?




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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post #10 of 11 (permalink) Old 07-02-2014, 10:12 PM
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Quote:
Originally Posted by iluvny081 View Post
hi guys, sorry I havent posted, I have been away from my computer for a few days. I can say with 100% honesty that running my 1.25" spacers has not had any ill effects on the way my commander drives. only thing the spacers changed is, now my tires dont rub at full lock when stearing left or right. but however they do rub ever so slightly on the rear part of the inner fender when the wheels are turned at a 45 degree angle. but its sooo slight Its not a problem for me at all. I have not done the pinch weld mod and my inner fenders are completely stock. i wouldnt even know they were rubbing exept for when its raining outside and I turn around i hear a tiny squeaking type sound when the tire meets the plastic inner fender. to give you an idea of how slight the rub is, I have been driving around like that for over a year now and the inner fender has no marks on it at all.

07JEEPXK:
we actually met last year at the kwikfill on tworod and clinton. I had the silver commander.
I remember meeting you, just didn't know that you were on the forum and/or your user name lol




2007 4.7 Liter XK | Front OME MD Springs w/Superlift Preload Spacer | Rear 4" Superlift Springs | Bilstein 5125 Rear Shocks | JBA UCA's | Rusty's Rear Adjustable Track Bar | Black Rock 997 Wheels | Fred Goeske 1/4 Inch Wheel Spacers | 305/70R17 Goodyear Wrangler MT/R w/Kevlar | Airflow Snorkel | Flowmaster 40 Series Muffler | Superchips Flashpaq | Mopar Skids | 4xGuard Belly Guard | American Rebel Rear Diff Cover | Rear Powertrax No-Slip | Front E-Locker | Rear Heat/AC Delete
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