2012 Jeep Grand Cherokee SRT8: New Tires
October 23, 2012
We've been living with our long-term Jeep Grand Cherokee SRT8 for about six months and we've driven it over 11,000 miles. And over that time we've had only one consistent complaint about the high performance crossover, its ride.
For most of us most of the time it's just too stiff. Too uncomfortable. Sure we dig the Jeep's handling capabilities, but the ride is overly compromised. At the recomendation of Ralph Gilles, the CEO of SRT, I've even started running the Jeep's tires at 28 psi (33 psi is spec) to try to smooth things out, but honestly it hasn't really worked.
We're not surprised. The Jeep's stock Pirelli P Zeros are run flats, and we think they are a very large part of the problem.
So we've decided to swap them out. The Jeep's stock tire size is 295/45ZR20. Tirerack.com lists only a few options in that size that are not run flats. We chose a set of the Sumitomo HTR Sport H/P, an all season tire.
We went this way for two reasons, cost and weather. The Sumitomos are cheap ($175 each) and we're curious how they will perform compared to the much more expensive Pirelli's. Also, winter is coming. And we don't want our all-wheel drive Jeep to be unable to navigate the mountains and ski areas of California, which it would be unable to do on its stock summer tires or BFGoodrich KDWs, which were also an option for us.
We plan to get the Sumitomos mounted on the Jeep this week. We'll let you know soon after if this was a great idea or a complete waste of time and money.
Scott Oldham, Editor in Chief