I have a 2000 Focus SE. Replaced factory tires at around 60,000 miles (+/-) with (forget their name now....Goodyear maybe. The guy said the tires they sold me are pretty much the exact same as the factory ones) at NTB. First problem, I noticed that the steering wheel would vibrate very rapidly back and forth at speed. I knew this to be from bad balancing. I took it back and had the tires balanced and it helped just a TAD. I also noticed that when slowing down and eventually coming to a stop, there was this rythmic, thumping noise (usually a sign of a defective tire(s)). I rotated the tires myself and all problems disappeared!!! So at this point, I know I probably have poorly balanced tires and maybe defective as well. (I got the warranty from NTB).
Here's the really weird thing though.... I noticed that all 4 tires have a noticable gap between the first and second tread on the inner part of the tire. It's nearly twice as wide as the gaps between the other tread on the tire: (crude example below)
X__X_X_X_X (X's are the tread and _'s are the valleys between the tread). And yes, I have my tires rotated every 6K miles.
I never really noticed this before, is this normal? Should I take my findings about the vibrating and thumping noise going away after I rotated the tires AND this tread issue back to NTB and get the tires replaced under warranty? Any NTB workers in here? Will they replace the tires or give me crap?
Thanks