I think that was a cheap tire set I got for $200.00 that they mounted on the wheels before they shipped them to me. Lionheart or something like that. I have since replaced the wheels and tires with new PS4S's.
Sounds awesome, I need a pro to push my car to it's limits so I know what they are. I haven't been able to do it yet or am just a chicken. Would be good to get that education of knowing it's limits. I built what is essentially a muscle car - sports car.
I had the issue and called Steeda and asked them about it. They told me they measured factory vehicles in some numbers and they can vary 1/2" from vehicle to vehicle. Luckily, the improved springs took care of the issue.
Amp rack installed and wired up. Got it very close to final tuning. Just have to lower the input on the subs a bit and adjust the gain on each sub amp. Sounds pretty damn good. The 8" Ground Zero's are ridiculous, they sound like 2 12" subs. I have no idea how that much bass comes out of such a...