Wheel and tire sizes vs. performance

iomatic · 06-19-2007, 02:16 PM

So, I'm not sure if this has been answered or not, but what's the point of going larger in wheels and thinner (or thicker) tires vs. the stock Si 17" size, and how will it affect ride quality, handling, MPG etc.? What should you do to your suspension, and what's the max. lowering with 18" wheels?

Also, I realize that in autocross and other performance driving, you'd likely get smaller wheels/tires for weight, but is there any other reason?

Thanks.

SR20DE_MAN · 06-19-2007, 02:18 PM

Cheaper tires. I've thought about doing some 16" x 7.5" or 8" wheels & some 225/50-16 r-compounds on the side. A hell of a lot cheaper than 17" tires & with more grip than you can shake a stick at.

honda06si · 06-19-2007, 02:20 PM

wider tires= more rubber on the ground= more traction
taller tires= bigger wheel to spin = slight loss in power
smaller tires= less weight..but less traction

iomatic · 06-19-2007, 03:36 PM

So wide + small sounds like a smart choice for performance, but not ride, right?

Thanks for the insights!

06-19-2007, 02:16 PM	#1 (permalink)
iomatic Senior Member Join Date: Apr 2007 Age: 37 Posts: 1,593 iTrader: 0 / 0%	Wheel and tire sizes vs. performance So, I'm not sure if this has been answered or not, but what's the point of going larger in wheels and thinner (or thicker) tires vs. the stock Si 17" size, and how will it affect ride quality, handling, MPG etc.? What should you do to your suspension, and what's the max. lowering with 18" wheels? Also, I realize that in autocross and other performance driving, you'd likely get smaller wheels/tires for weight, but is there any other reason? Thanks.

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06-19-2007, 02:18 PM	#2 (permalink)
SR20DE_MAN Senior Member Join Date: Oct 2006 Location: Shredding up tires on a twisty canyon road. Age: 32 Posts: 132 SR20DE MAN iTrader: 0 / 0%	Cheaper tires. I've thought about doing some 16" x 7.5" or 8" wheels & some 225/50-16 r-compounds on the side. A hell of a lot cheaper than 17" tires & with more grip than you can shake a stick at.

06-19-2007, 02:20 PM	#3 (permalink)
honda06si Senior Member Join Date: Sep 2006 Location: WV Posts: 11,150 justin iTrader: 6 / 100%	wider tires= more rubber on the ground= more traction taller tires= bigger wheel to spin = slight loss in power smaller tires= less weight..but less traction

06-19-2007, 03:36 PM	#4 (permalink)
iomatic Senior Member Join Date: Apr 2007 Age: 37 Posts: 1,593 iTrader: 0 / 0%	So wide + small sounds like a smart choice for performance, but not ride, right? Thanks for the insights!