Switching to Winter Tires (some advice)
Need for winter tires
Before moving from California to Massachusetts, I changed my tires from the stock summer-only performance tires to the Michelin all weather performance tires. My summer-only tires were near the end of their life anyway. However, I’ve learned something since living in Massachusetts. For a rear wheel drive car like the G8, you really need actual winter tires, not just tires that are rated for driving in snowy conditions (unless you are some expert driver that has skills beyond that of us mere mortals).
The brand that has been recommended to me on multiple occasions is Bridgestone Blizzak. The model I got was Blizzak LM 60. I also got new and inexpensive 18″ rims for my winter tires. The tires and rims were ordered as a balanced set. The outside diameter of the LM 60’s was nearly the same as the 19″ rim Michelin tires (which is also nearly the same as the stock summer-only tires).
Yes, I bought a whole new set of rims for my winter tires; for ease of switching the tires year after year. This means reduced costs and wear of switching tires since they won’t need to be removed and added to my stock rims and rebalanced twice a year. I paid a little more up front for piece of mind down the road, literally.
Road Force Balancing and Pressure Sensor reset
When I drive home from the tire shop, there was pronounced wobble or oscillation of my steering wheel. This wobble was worse between the speeds of 55 and 75mph. The next day, the car tire pressure monitoring system showed a simultaneous error on all four of my tires while driving down the freeway. I brought my car back within a couple of days. The tire shop had to do a full reset of my car’s computer system, so that it would properly read the new sensors in my new tires. This worked for that issue.
However, they weren’t able to fix the wobble of my steering wheel. They checked the tire balance, and everything seemed fine. They asked me to bring the car back another day to further investigate the wobble issue. On that drive home from the tire shop, I noticed the wobble was reduced, but still present. This got me thinking. Maybe there’s something else going on that balancing doesn’t take into account. Could it be how the tires where installed?
So, I got onto G8board.com and looked around to see if other G8 drivers also experienced this issue with their winter tires. A thread on G8board.com suggests that this is actually a common problem: Steering wheel wobble with new winter tires…. Two things become obvious. First, even though the tire balance was checked for the new winter tires, the tires needed road force balancing. Second, the proper torque (125ft/lbs) must be applied when installing the wheel lugs.
Armed with this knowledge, I returned to the tire shop on my scheduled appointment. During the process of road force balancing, they discovered that two rims where slightly out of round with their tire. They corrected the issue by shifting and remounting the tires. When they installed the tires back onto the car, they hand tighten the lugs to 125ft/lbs torque.
The results? The improvement was like night-and-day from the inital install! Success! The new winter tires actually feel slightly smoother than the tires on the stock rims. This makes me think that I may need to have those checked with the road force balancer next spring.






