We don’t get the Miata on an Interstate much and the last few times we did it showed some tire shimmy at 60MPH and again around 80 or so. Rotating the tires didn’t eliminate it totally, but did change its feel and speed of appearance. Seeing as we are doing a road trip this weekend that will encompass a good chunk of interstate I went to a different LTS and had the tires balanced. The Miata is fairly sensitive to balance issues because of the light weight wheel/tire combination and taught suspension. I’ll let you know how they did.
When I had the ticket written up I left a big hint that the torque spec for my lug nuts was 75 ft/lbs. I had tried that tact with the last place, but they didn’t get the hint (which is one of the reasons I’m at some place new.) These guys did good on this account as I checked when I got home in the driveway and the lug nuts were easily removable with the regular lug wrench. I then retorqued them back down to 75 ft/lbs.
They did made a weak attempt to sell me some new tires before balancing. The Toyos are nearly worn out, but I think I have another month on them. They were installed in October of 2004 when the car had a touch over 16,000 and we are fast approaching 40,000. That would mean I would get a respectable 25k miles on the set with this weekend’s trip and another 30 days of local travel.
Miata Top Transitions since 01/01/06: 160