I know that Rear Adjustable Control Arms allows Camber adjustment and its meant to improve handling. I am sure everybody knows that the uneven tire wear on the rear (esp on the inside wall) is due to the negative camber setting.

Will installing Rear Adjustable Control Arms helps with the rear tire wear if the camber can be adjusted more positive?

 

Yes, you will be able to make the tires contact the pavement more evenly. When lowering your car your going to be adding more negative camber ( top of tire leaning in) and increasing uneven treadwear. By adding adjustable rear lower control arms, you can pull the bottom of the wheel in to correct this.

 

They are about correcting the camber.....since they lower changed the geometry....but I don't think you can add more than it orgionally had!!

 

Yes you can, as the adjustable control arms have more than enough travel to allow it.

But if you are having severe wear differences on the rears you really should get it into an alignment shop and make sure nothing else is wrong before spending money on a product you may not need.

I am running about 1.5 of negative rear camber and am getting fairly even wear on my tires, but I like to drive the twisties a lot.

 

Yes get a set of Hsport rear camber links and that will give you the adjustment you need to get your alignment correct and save tire wear.

 

Is your 06 MCS lowered? If not, you should be able to adjust the rear camber adequately with the stock lower control arm adjustability. If lowered more than 3/4" or so, than you will need aftermarket adjustable lower control arms to reduce the negative camber.
If you are not lowered, you might just need a good four wheel alignment to adjust the rear camber and toe. The front toe is also adjustable. You also might need to rotate the tires more frequently.

 

Thanks for the input. My mini is not lowered. but has it always been the case even with proper alignment that the inside tire will wear faster due to the nature of the stock camber setting. Its the price to pay for great handling?
I know my rear tire position is not straight, it is a little tilted inside at the top. its been like that since i bought the car.
My rear tire is almost out so I will get it replaced and get alignment and we will see what happened.

 

Since you are stock height, you have a few things that might help tire wear without incurring the cost of purchasing aftermarket adjustable rear lower control arms.
1. Ask the alignment shop to adjust the rear camber less negative within the spec. I think the rear camber spec range is -1.2 to -1.8 deg camber. Ask them to adjust closer to the -1.2 deg limit. They should be able to get there with the stock camber adjustment.
2. Ask the alignment shop to adjust the rear toe closer to zero. This will help keep the tire from scrubbing across the inside tire edge. I think the rear toe spec (per side) is -0.07 to +0.07. Many alignment shop do not like to adjust the rear toe because it is a pain.
3. Rotating the tires rear to front will help balance the wear. How often you rotate will depend on how many miles you get out of a set of tires. I get less than 20,000 miles from a set so I try to rotate about every 5,000 miles.

 

yeah i did my alignment at firestone. I get the lifetime alignment. they probably havent done no 2 in the past so next time I will ask.
my tire set usually last more than 35K. maybe closer to 45k.
I rarely rotate my tire maybe every 10k miles.

 

quikmni,
Can you describe or show a pic of the stock rear camber adjuster for an '06 MCS? Thanks.

 

The upper and lower control arms are Item 9 in the diagram. The diagram is of the Left Rear looking from the front towards the rear. The lower control arm is used to adjust the camber. The adjustment is made at the wheel end of the control arm using Items 13 and 14. The adjustment is made by tuning an eccentric bolt/washer assy which moves the bottom of the trailing arm Item 4 in and out. Moving out adds negative camber (pushes bottom of arm/wheel out). Moving in reduces negative camber (pulls bottom of arm/wheel in).

You can see the control arms on your car by looking under the rear of the car near the mufflers. They go from the trailing arm/wheel towards the center of the car.

Toe is adjusted at the front of the Trailing Arm Item 4 at Item 7.

 

Thanks quikmni. You've just taught me a lot! Do you know the range of camber adjustment provided by the stock set up?

 

I am not sure about the range of adjustment but I think it is about +/- 0.5 degree.
With my JCW springs (lowered about 5/8") I can just get the camber back to -1.5 to -1.6 so I know they is not much adjustment.