So you'd suggest sticking with a 245/40 size which will be almost as wide as the 255's?

I run 255/40's in Azenis RT-615's without any issues. I kinda was thinking the same size.

 

lmao that's sig worthy. Especially the "with the exception of the warranty" part

 

lol, thats funny and true too!

 

I can't wait for spring.


All this snow got to go.

 

Yes, but it depends what you will be using them for. The info on TR doesn't seem to show the true size. When I get back to CT, I will take a ruler and pictures of mine to see if these really line up.

If AXing, I like the taller 245/45's to get more out of them on long 2nd gear tracks. If HPDEing, I like the 245/40 or 255/40's for more tire patch. I would go 245/40 in that choice due to weight savings - 2 lbs a corner.

245/40ZR17
26 lbs a tire
9.8 section width
24.7 dia
844 rpm

245/45ZR17
28 lbs a tire
9.7 section width
25.7 dia
808 rpm

255/40ZR17
28 lbs a tire
10.4 section width
25 dia
834 rpm

OEM:
235/45ZR17 (AO46's)
25 lbs a tire
9.4 section width
25.3 dia
822 rpm
((300 a tire now ))

 

I run the same exact wheels and tires man. They are so f-ing HOT!!

 

Since these run a bit wide, wonder if we would see any rubbing on the 255/40/17 with stock BBS.

 

^I used to run 255/40 on Advan 17x9 +35's. No rubbing at all. Lowered on Swifts too.

 

i run a 255!!!

 

^^Ummmm......what exactly are we supposed to be looking at in the picture?

 

 

i think he's showing us that he's running a 255 on stock wheels

 

^^ Yeah I got that man but the angle of that picture makes it really hard to interpret. Could've taken a picture from the side to show the stock wheel, tire sidewall, and ride height. I'm just saying...

 

What kinda pressure are you guys running on these? I have got my first auto-x of the season next weekend and I just got some brand new 17x9.5 rpf1's and 255/40r17 Z1's.

 

just to let ppl know, dunlop are offering a 50$ mail in rebate, and along with awesome prices at discount tire direct, i got 'em at about 127 each after rebates.