Ok so I bought a 99 Impreza OBS 5 speed last week and the tires that were on it all had the same tread style but the front tires had far less tread than the rears. I immediately swapped to my wheels that have matching tread style and depth. Is there anything I should probably check? The transmission seems to be fine but I wonder if it may have hurt the rear diff. I do at times get "jumping" from the rear when I let out the clutch but it's only from a dead stop and not all the time either. Maybe time to swap to an RS rear diff?