Car wobbles at 10-15 mph

[Neejay]

Is it my tire(s) that makes my car wobble at 10-15 mph? I think it may be my passenger rear tire if thats the case.

Anything else would make the car slighty wobble from side to side? My front 2 are new(er) falken ziex 512's. Rears are used...

I hope that doesnt mean a lump is comming up...

I also have coilovers, but I dont think thats the problem...

[SmithSR]

Sounds like a separated tire.. the lump is indeed coming up.

[Neejay]

Sounds like a separated tire.. the lump is indeed coming up.

Couldnt have come at a worse time....considering I need RUCAs...*sigh*

And do you think its alright to run 205/55 in the front, and 205/60 in the rear?

[SmithSR]

Yeah those sizes work well..

[Neejay]

Yeah those sizes work well..

Thanks...I took a pic of where I think the problem may be/arise. An elevated lump in a straight line going across the width of the tire in the tread, although visibly it doesnt seem to elevate/lump up the tire's surface:

[SmithSR]

That seems to be the treadwear indicator, not a separation.

[Neejay]

That seems to be the treadwear indicator, not a separation.

hmm...anyway to spot a seperation?

[Exar-Kun]

Run your hand (CAREFULLY!) along the tires tread surface, you will be able to feel a distortion (either a lump and shift in the tread) on the tire fairly quickly...

-Chet

[gogg]

I've had a wobble thats lasted through multiple tires and alignments, i think its my engine/transmission mount though, just a thought.

[Neejay]

Run your hand (CAREFULLY!) along the tires tread surface, you will be able to feel a distortion (either a lump and shift in the tread) on the tire fairly quickly...

-Chet

Tried it, didnt find anything

I've had a wobble thats lasted through multiple tires and alignments, i think its my engine/transmission mount though, just a thought.

How would that cause a wobble though? I know my engine mounts are shot, you can move my engine with enough force.

[Ceptos]

rotate them just to see if it changes. switch your rear to front and vise versa and take it for a spin and see if it changes the feel of the wobble.

[gogg]

How would that cause a wobble though? I know my engine mounts are shot, you can move my engine with enough force.

I have one nismo mount and one shot stocker, therefore its unbalenced. (yes this is ghetto, but i was in a hurry to swap my engine in and i have plans of getting all new mounts)

[Neejay]

I have one nismo mount and one shot stocker, therefore its unbalenced. (yes this is ghetto, but i was in a hurry to swap my engine in and i have plans of getting all new mounts)

Well, I know my mounts are shot. lol

rotate them just to see if it changes. switch your rear to front and vise versa and take it for a spin and see if it changes the feel of the wobble.

I cant do that because I have 205/60 in the rear, and 205/55 in the front.