I'm cross posting in here, hopefully, you guys might have something to add. My problem is a passenger rear tire scrapping the fender when going over bumps or dips, especially with 6 passengers in the car. I have a Mazda 5 2010.
What I've done so far:
1) Replaced rear shocks with KYB 343412 Excel-G shocks - right side was leaking. (Coincidently same side is having problem). I didn't noticed any scraping sounds after this. Ride did feel smoother. Winter tires were swapped in after this was done as well. Tires on OEM steelies and tire size match the all season, although definitely meatier than the stock toyos. The tire size is 205/55 r16
2) Replaced rear camber arms with adjustable camber arms about 3-4 weeks later. Wheel alignment done and set rear camber to -0.5. Scraping noticed after this was done.
3) Check the bump stops weren't cut or severed/damaged, sway bar links not broken, rear sway bar bushing may be worn.
4) Took apart the shocks again to check new shock was not a lemon. It was not and performs the same on the driver side rear.
I am wondering if the spring is an issue and reading the posts you guys added, I am wanting to replace my 2010 mazda springs for the 2012 springs and the spring seat rubber. I have long commutes (100km each week day) and can have 6 passengers from time to time. I'm wondering if the springs for the 2012 will correct the problem (as you guys stated, its an improvement but just wondering if you think it will be that big of improvement to correct my issue)?
Here's a link to my thread
http://www.mazdas247.com/forum/show...a-when-going-over-bumps&p=6251310#post6251310