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Old 08-24-2019, 03:59 PM   #1
miatard
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Are wheel spacers bad?

Some people say spacers are a bad mod because they alter the suspension geometry. Don't wheel spacers simply lower the effective offset of the wheel?

So let's say you have a base model variant of a car with +40mm offset wheels. Let's say there's also an OEM sports package for this car that replaces those with +30mm offset wheels, all other dimensions being the same.

Isn't this just the same thing as adding a +10mm spacer? so y so bad?
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Old 08-24-2019, 06:40 PM   #2
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Originally Posted by miatard View Post
so y so bad?
It's not.

Quality spacers are fine.
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Old 08-25-2019, 03:08 AM   #3
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Quote:
Originally Posted by miatard View Post
Some people say spacers are a bad mod because they alter the suspension geometry. Don't wheel spacers simply lower the effective offset of the wheel?

So let's say you have a base model variant of a car with +40mm offset wheels. Let's say there's also an OEM sports package for this car that replaces those with +30mm offset wheels, all other dimensions being the same.

Isn't this just the same thing as adding a +10mm spacer? so y so bad?
Depends on your camber.
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Old 08-27-2019, 07:46 PM   #4
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I've heard that since it moves your wheels further out, it puts more lateral stress on the wheel bearings, wearing them out faster over time.
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Old 08-27-2019, 07:52 PM   #5
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but dass wat im sayin ain't no diff between dat & lower offset ramz
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Old 08-28-2019, 10:56 AM   #6
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Originally Posted by miatard View Post
but dass wat im sayin ain't no diff between dat & lower offset ramz
Exactly.


As far as the car is concerned you're running wider or more offset wheels.
As long as they are good quality, and you aren't going to tear up your fender or rub, they are fine. Hell, OZ even makes TUV certified spacers.

I'll end up running 30mm, or possibly have some slightly larger ones custom made for my build.
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Old 08-28-2019, 02:22 PM   #7
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there may not be difference between altering offset with spacers compared to wheels with different offset but altering offset either way can cause harm.For instance more bending torque is applied through wheel bearings , which may cause premature wear.another effect is that tire scrub radius is changed , which alters steering feel , makes the steering more heavy.Changing scrub radius and track width also affects other things like camber gaining/losing through suspension movement . but for the most part , if you stay on reasonable numbers , say 10 mm you will be alright , at 30 mm certainly there will be a difference
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Old 08-28-2019, 03:34 PM   #8
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What he say!

Quote:
Originally Posted by doukas007 View Post
there may not be difference between altering offset with spacers compared to wheels with different offset but altering offset either way can cause harm.For instance more bending torque is applied through wheel bearings , which may cause premature wear.another effect is that tire scrub radius is changed , which alters steering feel , makes the steering more heavy.Changing scrub radius and track width also affects other things like camber gaining/losing through suspension movement . but for the most part , if you stay on reasonable numbers , say 10 mm you will be alright , at 30 mm certainly there will be a difference
It does alter geometry. The comparison with stock/OEM wheels is false.
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Old 08-28-2019, 04:39 PM   #9
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Quote:
Originally Posted by miatard View Post
Some people say spacers are a bad mod because they alter the suspension geometry. Don't wheel spacers simply lower the effective offset of the wheel?

So let's say you have a base model variant of a car with +40mm offset wheels. Let's say there's also an OEM sports package for this car that replaces those with +30mm offset wheels, all other dimensions being the same.

Isn't this just the same thing as adding a +10mm spacer? so y so bad?
Did they come from the factory that way? There is a reason... How old are you again?
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Old 08-28-2019, 05:04 PM   #10
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Your original post summary is spot on other than some alignment or component specs you can check for yourself between model variants. ~10mm and thinner spacers won't cause you any harm IF you have sufficient lug bolt threads to cover the difference. Beyond that you should really be looking at hub-centric adapters which bolt to your hub and in turn have their own bolts to accommodate a wheel. Jeeps with 42" + tires run them all the time, over boulders, without issue.
I've got 1000's of road miles plus drag strip passes on 3" and 4" wheel adapters to get C6 Corvette wheels on my 69 Impala.
Done *properly* it's a non-issue.
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Old 09-07-2019, 09:17 AM   #11
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Hub centric adapters are always preferred but still alter steering and suspension geometry ,most times for worse


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Old 09-09-2019, 01:15 AM   #12
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Entirely depends on the offset of the wheel you choose.

If you're starting at et60 on an 8" rim, 30mm of spacer isn't extreme.

If you're trying to use et0 e39 rimz, 1mm of spacer is already way too much.

t
keeping it centered
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Old 09-09-2019, 04:10 PM   #13
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when used on a stock wheel-tire set-up to "mod" for looks it's hard on the car.

when used to bring a different spec wheel/tire to stock settings it's ok. not ideal.

and wheel tire spacers that aren't quality hubcentric are just plain bad for other reasons.
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