Tire sizes on some 18's??

Lampoon · 10-03-2007, 10:16 AM

Ok...The net is telling me the best sizes for an
18X9 is 255-45-18
18X10 is 275-40-18

Isnt the middle number the height percentaged out of the width (first number)?

So this would make my cars tires taller in front than the back...!!

If I make them both 40 or 45 I cant seem to find the same brand tire and model to match up the thread pattern in both those sizes.

Ideas please as I am tiretarded.

racer99 · 10-03-2007, 02:16 PM

The handy dandy tire chart says you are right.
255/45/18 = 27.04 high
275/40/18 = 26.66 high

285/40/18 = 26.98 high
You probably couldnt tell a .06 diff between frt and rear.

Autobots · 10-03-2007, 06:59 PM

I'm not a tire expert, but I would run some 265/275-35's on the front and some 285/295-35's on the rear. Currently I run some 18x8, 245-40-18front and 18x9, 285-35-18rear.

95 GTS · 10-04-2007, 12:06 PM

run a 305 nitto DR on the rear or a 295 in something else

Scar · 10-04-2007, 12:11 PM

Quote:

Originally Posted by Autobots

I'm not a tire expert, but I would run some 265/275-35's on the front and some 285/295-35's on the rear. Currently I run some 18x8, 245-40-18front and 18x9, 285-35-18rear.

Can you tell me what tires you use? I have the 18 x 8.5 polished and I was told the same thing as the others regarding the biggest size I can get.

10-03-2007, 10:16 AM	#1
Lampoon Grand Poobah Join Date: Feb 2005 Location: The Alamo Posts: 335 Trader Rating: (0)	Tire sizes on some 18's?? Ok...The net is telling me the best sizes for an 18X9 is 255-45-18 18X10 is 275-40-18 Isnt the middle number the height percentaged out of the width (first number)? So this would make my cars tires taller in front than the back...!! If I make them both 40 or 45 I cant seem to find the same brand tire and model to match up the thread pattern in both those sizes. Ideas please as I am tiretarded. __________________ 2005 Mustang GT - SY decepticon! 2001 Mustang GT Bullitt #737 - sold her

10-03-2007, 02:16 PM	#2
racer99 Box Foxes Rule!!! Join Date: Feb 2005 Location: San Antonio TX Posts: 1,379 Trader Rating: (1)	The handy dandy tire chart says you are right. 255/45/18 = 27.04 high 275/40/18 = 26.66 high 285/40/18 = 26.98 high You probably couldnt tell a .06 diff between frt and rear. __________________ Never underestimate the unpredictability of stupidity! 78 Zephyr, 82 Granada Wagon, 88 Mustang 2.3T 94 GT Last edited by racer99; 10-03-2007 at 02:18 PM.

10-03-2007, 06:59 PM	#3
Autobots OutFoxed Join Date: Sep 2005 Location: houston Posts: 161 Trader Rating: (1)	I'm not a tire expert, but I would run some 265/275-35's on the front and some 285/295-35's on the rear. Currently I run some 18x8, 245-40-18front and 18x9, 285-35-18rear. __________________

10-04-2007, 12:06 PM	#4
95 GTS Back in the saddle again Join Date: Feb 2006 Location: Texas Posts: 1,723 Trader Rating: (0)	run a 305 nitto DR on the rear or a 295 in something else __________________ 2007 Reflex Silver Wolfsburg Jetta - new hotness 1995 Canary Yellow GTS - Sold 12.81@106.2 w/1.80 60' Boltons/E303 + 3100 lbs + M&H 246 HP/ 290 TQ 12.57 @ 109.21 w/1.76 60' Boltons/GT40Ps/XE270 + 3240 lbs + 555Rs 295 HP / 321 TQ

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