This is just the propaganda that is put out by every manufacturer. What it boils down to is the replacement assembly is exactly the same as the original equipment versions. Don't over-think this. For normal cars and driving conditions you are very unlikely to notice any difference except when the old ones were worn out or leaking, then of course the new ones will feel better.
This reminds me of when Toyota's advertising touted their gold-plated contacts for their air bag impact sensors because they spared no expense for your safety. What they failed to mention is ALL impact sensors for all car brands and models have gold-plated contacts. Ford used to advertise 17 standard features for, as I recall, their Tracer. Those features included, ... Uhm, ... Steering, brakes, wipers, even tires. Go figure. All their standard features were identical to what came on all brands of basic car models for years.
What you need to look at is Toyota bought or made their coil springs, and you can be certain they tested 100 percent of them. The aftermarket company is bragging about testing one fifth of theirs. What about the other 80 percent? Do you want to get the one or two out of a hundred that don't meet loading specs and didn't get tested, or are not a matched pair?
Chrysler buys their injectors from Bosch in flow-matched sets for every engine, and problems are pretty much unheard of for the life of their cars. GM grabs a handful of injectors out of a bin with no regard to matching their flow rates, then they have performance problems that show up years later. Theirs are 100 percent tested too, but they didn't go far enough.
Don't get wrapped up in the hype. I was an alignment specialist at a new-car dealership for ten years, and while I never used the Quick Struts, we never obsessed over what the parts stores sent us. I installed whatever they had in stock and never had any customer complaints. Also, because I replaced so many struts, I got good at it and could replace a pair in 20 minutes once the car was on the hoist. It was less expensive for our customers to have me do it that way, and most of the cars that come into dealerships are new enough to not need new springs yet.
Wednesday, February 11th, 2015 AT 12:07 AM