perfect wheel size
im concered about the ride height increasing, i want to keep my car as low as possible if not then lower than it already is. wish i could get a new suspension but i'm on warranty.
Whats the best size rims ?
select the tires for the rims do you get involved in ride height, rolling
distance, and circumference considerations.
tire/wheel fitment
my favorite...
http://www.miata.net/garage/tirecalc.html
good one showing side fits...
http://www.1010tires.com/WheelOffsetCalculator.asp
the goal is to know what your stock configuration is now, and to try and
replicate and minimize any differential with your new tires. once you begin
to depart from this circumference will this affect ride height, odo and speedo
readings.
also, the ET makes a big difference as you should strive to maintain the
recommended ET on your car as issued from the factory. there is a bit of
latitude, measured side-to-side in millimeters, to be sure to keep an eye
on this.
be sure to pay attention to rolling distances/circumference between rear and
front tires, if you are trying to go with staggered configuration. they really
need to be spot on, ie th same, or your cruise control may not work. too
large a difference and this can wreak havoc on your 4matic (if you have this).







