falkore24
9/17/2007 10:08:35 AM
I want to get some opinions before I do this. I'm aware that I'm adding a little weight to the wheels, but I'm hoping that the extra tread will be worth it.
I'm considering replacing my tires with 225/60R15's. The stock size is 205/65R15.
This won't throw off my speedo enough to care.
snodog
9/17/2007 10:42:35 AM
I had posted tire comparison data but it was too long in the forum post format.
falkore24
9/17/2007 10:53:35 AM
Exactly what I was thinking ..... but then, why don't more people make this change???
Please do me a favor and remove all of the blank lines so it's easier for others to look through this thread. I'd appreciate it!
FYI - I also looked into 235/55R15, but that size doesn't seem to exist.
falkore24
9/17/2007 11:33:33 AM
it was good data sno, I just wanted you to remove the spaces to make it easier to read ......
for anyone else, here's the info:
Stock size: 205/65-15
Sidewall: 5.2"
Radius: 12.7"
Diameter: 25.5"
Circumference: 80.1"
Revs/mi: 791.0
New Size: 225/60-15
Sidewall: 5.3"
Radius: 12.8"
Diameter: 25.6"
Circumference: 80.5"
Revs/mi: 787.0
The speedo will read 0.5% slow. When the speedo reads 60 mph, the car will be moving 60.3 mph
info courtesy of
http://www.miata.net/garage/tirecalc.html
falkore24
9/18/2007 9:12:14 PM
bump ..... ideas? Good, bad ...... does anyone know the max width that the stock rims can or are good to take?
falkore24
9/25/2007 12:57:38 PM
They're installed and a little wide, but I kinda like them. I have to be easy on them for a little bit to wear off the silicone coating before testing them. Who thinks I can hit 1.0 g's now?!? I hit 0.95 with my Yoko's and now I have almost 4 inches more rubber on the ground!
ckebottle
9/25/2007 2:08:14 PM
I recently just put yokos on my car, did you like your yokos? Dunno about the 1g...are u gonna tell us if u did? or make us guess first.
falkore24
9/25/2007 2:24:53 PM
I'm not going to push the new tires hard for another week or so since they are not broken in yet and still have the mold silicone on them. I liked the Yokos, but I had the AVS db S2's that have a dual depth rain channel design, 2 per tire ...... all 8 rain channels developed a crack all of the way around the tire! That's the main reason that I changed them ..... they still had decent tread, but I didn't feel safe with the crack. They were stock size on stock rims .... 205/65-15. My Nankangs are 225/60-15's.
