GiantsFan

iTrader: (9)

thanks for the info.

So 20mm is what makes the wheels flush in the back right? Is it 20mm total, or 20mm each side? Im assuming this set is sold as 20mm each side ...

http://www.ichibausa.com/20albowhsp10.html

Thanks

Audiofan2

Sorry I didn't see your request until just now, see pic below.

sinister2c

245/40/18 tires are alot more common and cheaper. There are 2 to 3x more selection. On Discounttiredirect.com their calculator shows that the 245/40 is only -0.16 inches shorter than a 255/40, probabably equivalent to a worn 255/40. So at 80mph on the dial, you are really going 79.03mph. No big deal.

I know a few people who have done this without any problems. My 275/30/20 are bigger than the stock overall diameter and I've had no problems. At 80mph ont he dial, im really going 81.43mph. Saving mile on the ODO....woohoo.

kayotik

iTrader: (6)

i will personally be going with 245/40/18 tires when i have to change. I think the 255 looks too fat on our OEM 8.5" width tire.

mystro1v

My whole reasoning behind the 245/40 was simply the selection of front/rear sets available at that size. On TireRack, it more than doubled. Beyond this, 245/40s tend to be cheaper.

Here's the comparison chart from 1010tires. They basically threw a warning up if you got past 3% "Diameter Difference." At 1.23%, it shouldn't be a big deal and you're actually losing just 2/5" in width. One point brought up by the technician who assisted me was that my odo would count faster considering the .7 mph difference in reading at 60mph. That's negligible though... over 60,000 miles, you're looking at just ~700 mile higher.



After all this, I ended up going with OEM sizes on a set of Goodyear F1 Eagle All Seasons because a tire failed and I needed a set right away. Yeah, I know they're supposed to get unbearably loud with wear - I'll pay attention and keep you all posted.

Thanks for the help!

JIS

What about 245/45/18? Has anyone tried this size? I would like to put a set of Falken ZE-912's on but they don't make them in 255/40/18. I have these tires on my second car and they are great. I'm guessing mixing brands on the front and back is a no no.....

sktn77a

iTrader: (2)

4mm radius difference is about the same as a 1/2 worn tire. So Tire Rack think your electronics are screwed up when you replace a half worn tire with a new one? I hate to think what that compact spare is going to do if you ever need to use it!

benzo555

iTrader: (11)

It all depends on your preference. As long as tires have tread then its fine. Is just that the tread may look different. I dont really care. Alot of Supras in my buddys shop run street drag radials and Z rated tires on the front.