3 of 4 are already more than 5 yrs old and shouldn’t be considered for serious track use. Also that assumes ideal storage conditions which “cold dark storage unit” wouldn’t really qualify for IMO. GLWS
Tire shine is no joke. Leaving the hand car wash I go to is a hazardous situation. If you’re not careful you could easily pull a cars & coffee crowd-eater move. Or a 100ft burnout, which I “accidentally” did one day. That said, I would expect any tire shine on your tire to have been gone by the...
I love when forum experts tell you that parts like the K brace or STH will do nothing to your car on the street (or ever). And then you install the part and immediately feel the car is better.
I’m not getting a commission from Steeda, the braces work.
I’ve not driven a Mach1 so I can’t comment on the handling there. I can tell you that the K brace I just installed removed all mid-corner “wiggle” on my PP2. Between that and the STH my car feels a lot more composed in the turns.