Bitchen man thanks! I think i'll do that while the engine is out next month
BTW, and it's also relevant to this post
, it's the overall
diameter of the tire on the exact rim that is important for keeping all 4 tires "the same size" for ABS/TC to work and not throw an rate/tire error.
I have the M2300K Cobra brake kit. For the winter, I run sn95 15" rims and tires on the back that end up having an overall tire mounted diameter of ~1% of my require 17" tires and rims up front. The 15" Blizzaks are much cheaper than the 17" tires. Note that I use the
same tire style/model on the front and back. When I drive my Stang in the winter, I'm driving easy, and keeping a good distance from all of the Mass-hole drivers that can't drive even in ideal weather. Also, the
tread-width/contact area on my 17" Blizzaks and 15" Blizzaks are also pretty close.
"In general", for ABS, you want to keep within 3% diameter within all wheels. But, especially with traction control, there are issues, unless
all four tires are exactly the same and have exactly the same wear (not counting cars like Vets where they are designed for different back/front tires, of course
).
That's why, for legal reasons, many tire places will only sell and mount and
install all four tires at the same time. Some places will sell and mount 2 tires, but will not install them for fear of legal reasons (violates the requirements set for for the vehicle by the vehicle manufacture).
Heck, now, even with Tire Rack, I have to spec all of my tires to be for an off-road/custom vehicle. Still, even though I do that, when I ordered my
summer-only tires via their web page, Tire Rack called me up the next day, and I had to
call back to confirm that I knew that I could
not use the
summer-only tires when it got cold (I live in New England), or a worm hole could open up and destroy the universe and it would be all my fault!