Mileage on the springs is unknown since I did not install them. Mileage on the car when removed was about 170k. The only problems was the fact that the car tended to be low to the ground and would ocassionally scrape stuff on the underside when going over high spots in the road. Entering or exiting parking areas that have a high incline or steep approaches, things would scrape. You quickly learn that when approaching a steep incline that its best to take it at an angle rather than straight on. Also had to be aware of what was in front of the car when parking. High curbs or sidewalks would ocassionally scrape the underside of the front end. On agressive bumps in the road the car would "bottom out" on the suspension stops. But all these characteristics are to expected when the chassis is riding lower than the design height. Cornering characteristics were good. I Just dont like that kind of ride. I like the soft cushy ride and the advantages of high ground clearance. In fact I have added some coil boosters to the stock springs to get a little extra height.

__________________
I got too many cars!! Insurance eats me alive. Dave

78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
89 560sl - 78k
91 420sel - 205k
91 560sel - 85k
94 GMC Suburban - 90k
97 Harley Davidson Heritage Softail - 25k
00 GMC Silverado 1 ton 30k