Quick Tire question.. - TriStateTuners.com :: Home of Tristate Auto Enthusiast

sleeperSL2 · 06-20-2010, 08:44 PM

Currently on my car i have 195/50 r15 tires..im picking up another set of stock alloys and getting new tires as well..im going to go with 195/60 r15's..

my question is..the difference in tire size, what is it exactly? the height of the wheel or sidewall? i know the ones i have on now look stupid small.

Nick 95 6sp · 06-20-2010, 10:48 PM

The "50" and "60" are the aspect ratios. On the same width tire, the higher the aspect ratio the taller the sidewall. I say "on the same width tire" since the sidewall height of the tire is actually the width number (195) multiplied by the aspect ratio (as a decimal).

So a 195/50 has sidewall height of 195mm X 0.5 = 97.5mm (3.84 inches). A 195/60 has sidewall height of 195 X 0.6 = 117mm (4.6 inches).

In your example, the wheel is always 15 inches diameter. To get the overall tire height, add twice the sidewall height (since top and bottom) to the wheel diameter.

sleeperSL2 · 06-20-2010, 11:14 PM

okay..i get what your saying..now im not sure if i should stay with the 195/60 or go with a 205

06-20-2010, 10:48 PM	#2
Nick 95 6sp Tri-State Post Whore Join Date: Feb 2007 Location: Narberth, PA Member #3675 My Ride: '95 Supra Turbo 6sp iTrader: (0)	The "50" and "60" are the aspect ratios. On the same width tire, the higher the aspect ratio the taller the sidewall. I say "on the same width tire" since the sidewall height of the tire is actually the width number (195) multiplied by the aspect ratio (as a decimal). So a 195/50 has sidewall height of 195mm X 0.5 = 97.5mm (3.84 inches). A 195/60 has sidewall height of 195 X 0.6 = 117mm (4.6 inches). In your example, the wheel is always 15 inches diameter. To get the overall tire height, add twice the sidewall height (since top and bottom) to the wheel diameter. __________________ Nick '95 6sp Supra Twin GT2860's w/TiAL exhaust housings, 2X TiAL WG's and BOV's, on V-band moded HKS twin manifolds, AEM v2, FJO w/NTK, AEM meth/water spray, GSC S1 cams, OS Giken triple clutch and Super Lock LSD, Racelogic

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