How do you like your 17x8 ? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

rikdrt1 · 10-21-2012, 11:01 PM

im thinking of going to 17x8 rim and appropriate tire -- not asking specifically about how you like your tires on 8" wide - but overall how did it change your driving / handling / daily driving / suspension...

im still thinking just doing 17x7.5 and keep it as close to the original stock setup as possible but jsut asking how you guys like your x8 +45/48 setups....

HSC · 10-22-2012, 03:48 AM

I like my 17x8 +48 w/ 235/45/17. They track a lot better and you definitely feel more planted over stock. One thing I didn't expect w/the setup is the drop in fuel economy...my guess is about 4-5mpg. I've only put a few hundred miles on this setup so hopefully that improves but I'm pleased with it overall.

uspspro · 10-22-2012, 04:54 AM

Quote:

Originally Posted by HSC

I like my 17x8 +48 w/ 235/45/17. They track a lot better and you definitely feel more planted over stock. One thing I didn't expect w/the setup is the drop in fuel economy...my guess is about 4-5mpg. I've only put a few hundred miles on this setup so hopefully that improves but I'm pleased with it overall.

Did you account for the speedo inaccuracy due to the larger diameter tires?
Your actual mpg should not really be much different. The mpg based on the speedo data will appear lower than reality.

235/40 is a bit closer to stock diameter.

245/40 is almost exactly stock diameter (but better suited for a 9" rim)

HSC · 10-22-2012, 06:52 PM

Yeah, even if i factor in the ~3% difference in diameter, i still come up short on the gas mileage. The mileage isn't bad but it isn't what it use to be. Oh well...

brz7400 · 10-22-2012, 08:51 PM

Quote:

Originally Posted by HSC

Yeah, even if i factor in the ~3% difference in diameter, i still come up short on the gas mileage. The mileage isn't bad but it isn't what it use to be. Oh well...

maybe you are gassing it out of corners harder, now that there is traction

Monster · 10-24-2012, 11:26 AM

hmm I bet some RS3's or RA-1s would make it feel 100% better haha

diirk · 10-24-2012, 12:18 PM

Quote:

Originally Posted by HSC

Yeah, even if i factor in the ~3% difference in diameter, i still come up short on the gas mileage. The mileage isn't bad but it isn't what it use to be. Oh well...

Also check your tire pressure. 5 mpg is a really big difference for such a small increase in tire size. Also curious what wheels and tires you're running.

schtebie · 10-24-2012, 02:32 PM

I've only put about 70 miles on my 17x8 +37 wheels, but I'm very happy so far.

I'm also running 225/45/17 Michelin Pilot Super Sports. Very quiet, light, and sticky tire.

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10-22-2012, 03:48 AM	#2
HSC Senior Member Join Date: Oct 2012 Drives: Whiteout FR-S Location: LA Posts: 106 Thanks: 21 Thanked 22 Times in 19 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	I like my 17x8 +48 w/ 235/45/17. They track a lot better and you definitely feel more planted over stock. One thing I didn't expect w/the setup is the drop in fuel economy...my guess is about 4-5mpg. I've only put a few hundred miles on this setup so hopefully that improves but I'm pleased with it overall.

10-22-2012, 06:52 PM	#4
HSC Senior Member Join Date: Oct 2012 Drives: Whiteout FR-S Location: LA Posts: 106 Thanks: 21 Thanked 22 Times in 19 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Yeah, even if i factor in the ~3% difference in diameter, i still come up short on the gas mileage. The mileage isn't bad but it isn't what it use to be. Oh well...

10-24-2012, 11:26 AM	#6
Monster Junior Member Join Date: Oct 2012 Drives: gc8 Location: California Posts: 3 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	hmm I bet some RS3's or RA-1s would make it feel 100% better haha

10-24-2012, 02:32 PM	#8
schtebie Senior Member Join Date: Jun 2012 Drives: CBS BRZ Limited Location: TN Posts: 494 Thanks: 336 Thanked 193 Times in 136 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	I've only put about 70 miles on my 17x8 +37 wheels, but I'm very happy so far. I'm also running 225/45/17 Michelin Pilot Super Sports. Very quiet, light, and sticky tire.

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