New Wheels, New Tires (Beaten to Death but I Need Help)
02-09-2014, 08:41 AM
#21
6th Gear Member
Join Date: Feb 2007
Location: state of confusion
Posts: 7,635
There is a guy in Texas running 295/35-18 BFG Rivals on 18 x 11 rims at all four corners for autocross and track day time. I don't know if, or how much, his car is lowered but offset is critical.
Norm
02-09-2014, 10:02 AM
#25
6th Gear Member
Join Date: Feb 2007
Location: state of confusion
Posts: 7,635
I'm hearing two different kinds of limitations here.
One of them is the ride height for ground clearance reasons, which mainly limits your choice of springs.
The other is choosing a wheel offset that doesn't let the tires and the sheetmetal ever meet. Best to pick the springs for ride height (ignoring the wheels for the moment) and then picking wheels to fit without any rubbing. Aggressively pushing the offset down to small numbers will work against much lowering at all.
Aggressive for maximum wheel width reasons requires using up as much room to the inside as possible, plus as much room to the outside as you can, and putting the wheel centers right where the mounting faces on the rotor hats sit . . . which will dictate a pretty specific wheel offset number.
Norm
One of them is the ride height for ground clearance reasons, which mainly limits your choice of springs.
The other is choosing a wheel offset that doesn't let the tires and the sheetmetal ever meet. Best to pick the springs for ride height (ignoring the wheels for the moment) and then picking wheels to fit without any rubbing. Aggressively pushing the offset down to small numbers will work against much lowering at all.
Aggressive for maximum wheel width reasons requires using up as much room to the inside as possible, plus as much room to the outside as you can, and putting the wheel centers right where the mounting faces on the rotor hats sit . . . which will dictate a pretty specific wheel offset number.
Norm
02-09-2014, 11:29 AM
#26
1st Gear Member
Join Date: Nov 2012
Location: katy,texas
Posts: 131
True. I don't know how much further I can go than my current setup because right now I have 18x10 +43 on the front and 18x10 +38 on the rear, 275/40 all around. It looks like I could go a little wider but don't know if I want to take the chance as it's already pretty flush.
02-09-2014, 08:08 PM
#30
6th Gear Member
Join Date: Feb 2007
Location: state of confusion
Posts: 7,635
Where in the world are these wheels in quarter inch widths coming from? Most everybody else does inch and half inch widths only.
Norm