jumper5836

Having and issue with inside rear tire wear and it killing my tires. Just chewing the inside of the rear tire. I thought it may have been rear camber but I only have -2.4 and I can't decrease the camber after I had it lowered.
After doing a search I see solid LCA bushings always come up but what are these and where to I go to find them?

TheDeckMan

I have a couple sets from when I made mine for my Turbos. If interested shoot me a PM.

Capt. Obvious

Toe kills your tires much faster than camber. Have you had the car aligned recently?

"02996ttx50

toe "out". have you tried aftermarket toe links?

cured my inner wear, as much as it could. wot "squat" will kill inner tread ( fast ) as will hard acel on uphill tight turns. i'm rwd and there's no getting around that.

Third-Reef

Lowered car, you need toe rods so it can be aligned properly. Solid thrust bushings wont fix it. Got to get the camber and toe dialed in properly first
I have H&R red springs with toe rods and its pretty low. I got 22K out of my rear PS2s

ghostofpain

The rear shocks still work properly?

jumper5836

Yes I have about 15k km on HR& RSS sport coilovers. Alignment was checked and toe is .1 for rear. Stock tow links, control arms. Camber is -2.4 and can only add more neg camber need to add drop links to decrease the camber I am told.
There is no issue with front tire wear and car is mostly just driving to and from the track or from services.
I do notice that my drivers side ride height seems lower then the passenger side height. I wonder if I need the height adjusted as well to balance it.

993GT

give this a look

jumper5836

So I ended up just doing Adjustable Rear Link Kit and Rear Adjustable Toe/Bump Steer Kit with Rear Toe Link Locking Plate Kit.
This has fixed the issue. Went to also replace the thrust arm bearing but was told the control arms are old and the bushings wouldn't come out and they didn't want to break it, told to wait and get new control arms and then replace them. But looks like I may not need it anyways as the extreme tire wear issue has gone away. Also just to note the wear was from 8 x 20 min track sessions. It would wear the extreme inside edge of the rear off to the cord while the rest of the tire was basically showing very little wear.

kamlung

which ones did you get? link?

jumper5836

Here are the part I installed

• 307 Rear Adjustable Upper Link Kit "Dog Bones" (996-997 all)
• 312 Rear Adjustable Toe Steer Kit (986, 996, 987, 997 all)
• 333 Rear Toe Alignment Locking Plates (986, 996, 987, 997, 981, GT4)

https://roadsportsupply.com/307-rear...s-996-997-all/
https://roadsportsupply.com/312-rear...6-987-997-all/
https://roadsportsupply.com/333-rear...7-997-981-gt4/

kamlung

so the adjustable toe links help to correct the inner tire wear and the upper dog bones help to correct the camber... the locking plates are where the toe links mount into the lower control arm is that correct?

powdrhound

I would not change camber via the upper control arms (dog bones) unless you really know what you are doing as it changes the suspension kinematics.

jumper5836

I believe the main issue is the oem parts have rubber bushing that wear out and when pushed go far beyond what they are set at. This leads to the excessive wear. The steel bushing are more solid and don't move. The locking plates are there so the toe does move as some people find that they do loosen up on the bolt.
The dog bones help when you have lowered your car as they are longer and you can then get a better range of camber. Without these my car could only do neg -2.3 camber or higher neg camber. I could not do say -1.8 if I wanted to. Now I can so this also allowed my to change my camber to something that may help more even tire wear across the tire.