Tire wearing quickly on the inside! Trouble shooting Help!

[BobbyBlue86]

Originally Posted by Sweet48

First thing I check for after new tires or something is installed I check the torque on the wheels, if it doesn't show anything I re-balance them. Quickest and easiest way in my opinion to try to solve a vibration issue as you describe. If it persists then I might go ahead and check for tire run-out or rim bend/s? I'm trying here LOL

Good luck

Thanks!

There is a whole mess of things going through my head. I had my gear box replaced RIGHT after i put those wheels on and the humming makes me think I need to check the drive shaft to make sure they didnt install it wrong or something.

Is there any way you can install the universals 180 out from each other and cause an unbalance? I tried looking up pictures while I was at work but i didnt see if it was possible on these or not.

The dunlops are SUPER loud and i think putting the super sports on there quieted it down enough to hear/feel it. Lol

[Sweet48]

Originally Posted by BobbyBlue86

Thanks!

There is a whole mess of things going through my head. I had my gear box replaced RIGHT after i put those wheels on and the humming makes me think I need to check the drive shaft to make sure they didnt install it wrong or something.

Is there any way you can install the universals 180 out from each other and cause an unbalance? I tried looking up pictures while I was at work but i didnt see if it was possible on these or not.

The dunlops are SUPER loud and i think putting the super sports on there quieted it down enough to hear/feel it. Lol

Oh wow, what was wrong with your gearbox? Hell with something like that i "could" be your driveshaft but i really doubt it. typically the car will definitely tell you if somethings wrong with that. lol

Sorry what did you mean universals? Maybe we have different names for some things, us canadians seem to be behind the times of our neighbours to the south. (YES neighBOURS not neighBORS, politically correct humour, kinda my thing)

Ya those dunlops arent the quitest tires around, i try to avoid dunlops if possible (unless star spec 2's )

[8R6]

maybe your front shocks are blown? have you tried putting back on your stock wheels/tires and see if you still have all the same issues?

[BobbyBlue86]

Originally Posted by Sweet48

Oh wow, what was wrong with your gearbox? Hell with something like that i "could" be your driveshaft but i really doubt it. typically the car will definitely tell you if somethings wrong with that. lol

Sorry what did you mean universals? Maybe we have different names for some things, us canadians seem to be behind the times of our neighbours to the south. (YES neighBOURS not neighBORS, politically correct humour, kinda my thing)

Ya those dunlops arent the quitest tires around, i try to avoid dunlops if possible (unless star spec 2's )

5th gear was grinding slightly and I saw that it was R&R so i went in and got it done.

http://s1348.photobucket.com/user/qu...c828a.jpg.html

These are universals. A buddy of mine at work mentioned that I check to make sure they were "re-installed correctly" which Im not sure if they can even be...

[BobbyBlue86]

Originally Posted by BRGT86

maybe your front shocks are blown? have you tried putting back on your stock wheels/tires and see if you still have all the same issues?

I really hope they arent... and I sold my stock wheels to a local who was returning to stock for trade in.

[stevesnj]

Can you post the tire specs? Name, Brand, size? Would help in the forum diagnosis..lol

[wheelhaus]

IIRC the driveshaft will come out as a complete unit, the splines/bolts are before and after all the universal joints so unless they disassembled the shaft itself, I wouldn't think the shaft phasing/clocking would have been change at all. I could be wrong, if the pic linked above is from a BRZ then it is a 2 piece shaft, and the forward joint might need to be reclocked. If there's no deflection coming from the transmission case to the carrier bearing, then the universal joint clocking shouldn't matter. that clocking only matters when the shaft input and output are not always/ever in axis.

I'd be curious to find out whats causing the vibration, may be related to tire wear, may not. You could get the car up on jackstands and spin the rear wheels in 1st/2nd, or the fronts by hand to see of something is obviously out of round. Swap to another set of wheels to see if it goes away. Also while its up, try to wobble the wheels with your hands at 12 and 6 o'clock to rule out bearing or joint failure.

[BobbyBlue86]

Originally Posted by stevesnj

Can you post the tire specs? Name, Brand, size? Would help in the forum diagnosis..lol

They are the stock wheels and tires from a 2013 WRX so 235/45/17 dunlops.

[BobbyBlue86]

Originally Posted by wheelhaus

IIRC the driveshaft will come out as a complete unit, the splines/bolts are before and after all the universal joints so unless they disassembled the shaft itself, I wouldn't think the shaft phasing/clocking would have been change at all. I could be wrong, if the pic linked above is from a BRZ then it is a 2 piece shaft, and the forward joint might need to be reclocked. If there's no deflection coming from the transmission case to the carrier bearing, then the universal joint clocking shouldn't matter. that clocking only matters when the shaft input and output are not always/ever in axis.

I'd be curious to find out whats causing the vibration, may be related to tire wear, may not. You could get the car up on jackstands and spin the rear wheels in 1st/2nd, or the fronts by hand to see of something is obviously out of round. Swap to another set of wheels to see if it goes away. Also while its up, try to wobble the wheels with your hands at 12 and 6 o'clock to rule out bearing or joint failure.

Yeah i thought i might try that when I have a day off... And no that drive shaft was just a picture to show what I was talking about when it came to the universal.

[ashtray]

Stock tires for the twins are 215/45/17, so going to a 235/45/17 setup without changing alignment is asking for bad tire wear. Its both a taller and wider tire.

As for your vibration - too many variables changing. Most likely tire related but who knows.

You got 2 new tires? Consider getting 4. Also consider buying the "right" size for your car.

[wheelhaus]

Originally Posted by ashtray

Stock tires for the twins are 215/45/17, so going to a 235/45/17 setup without changing alignment is asking for bad tire wear. Its both a taller and wider tire.

As for your vibration - too many variables changing. Most likely tire related but who knows.

You got 2 new tires? Consider getting 4. Also consider buying the "right" size for your car.

Geez man, a little harsh? Changing tire size most certainly is not "asking for bad tire wear" and does not require a new alignment. 235 are only 2.8% taller and 20mm wider. That translates to about 3/8" taller diameter (3/16" taller radius, this is what matters mechanically), and less than a half inch on each side. Hardly a huge change. The wheel and tire are still pointing in the exact same direction.

The wheel alignment isn't dependent upon tire size until you get to extremes, which doesn't apply here. The new wheel and tire are still pointing in the exact same direction. The alignment numbers he had/has shouldn't create ANY abnormal wear after only 500 miles. I am still betting on the tires being worn more than he believed at first, especially if his friend's WRX was running more camber.

edit- And where on earth did you read that he only installed two wheels and tires?

I also have tires/wheels from a friends WRX; 225/45/17 that are on my car now and are wearing perfectly, no alignment necessary. I even had 20mm and 25mm spacers installed for a while, again no alignment necessary. A Tire Rack tech I spoke to recently says 225/45/17 is actually a recommended size for the 86 in their vehicle info database.

[zkv476]

Driveshaft is two piece, but the joint at the center carrier bearing is bolted together not slip-spline and there's no reason to disassemble the shaft swapping a trans (I did my third 2 weeks ago lol...), so you can rule that out unless it looks unbolted.



That's quite odd... Before I got rid of my stock tires and replaced them I installed coils and drove around not aligned for about 1000 miles and the tires weren't even that bad. The before settings weren't pretty either lol. I checked for rim bends once by putting the car on stands, starting the car, and letting the wheels spin freely on the car (obviously not fast lol) but if you do slowly ramp it up you can feel a vibration develop if is really out of balance or bent. It's also a good way to find out which one it is.

[FReSh]

Might want to check the control arm bushings to make sure they're in alright shape. Having them worn out could cause a vibration and some wonky tire wear...

[BobbyBlue86]

I'm honestly going to chalk it up to me not inspecting them very well.... Everyone I have ever talked to says that the WRX's ABS eats the hell outta the inside of the tire. And upon inspection of his new tires, they look as if its true.

I checked everything and mechanically everything is fine.

As for the vibration, I think its just the new tires "feel" that im getting used to.... And I do believe that when I replace the older front tires it will all go away.