: 265/75 or 275/70?
donnieashley 11-28-2007, 12:09 AM I'm new to the site and to Xterras. Wife and I got a 2004 back in the spring and its time for some nondealership tires. I've read people are running 265/75/16s with no mods. Anyone running 275/70/16s? I wanna go a little taller and wider, but I don't wanna have to cut up anything on the wife's truck. Pics would be a great help to see the tires in the wheel wells.
soccerbrace 11-28-2007, 02:01 AM Welcome!
Alright, here is a thread that you might want to read
http://www.clubxterra.org/forums/showthread.php?t=2313
Did you know that you are asking if a smaller tire will rub?
Your set up that you have now with the 265/75/16 is bigger than the 275/70/16.
You might be a little lost as was I when I first heard about how tires were sized.
What do all the numbers mean?
Each section of small print on a tire's sidewall means something:
Your stock tire is a P265/75/R15 for example
P-Tire type:The P designates that the tire is a passenger vehicle tire. Some
other designations are LT for light truck, and T for temporary or spare tires.
265-Tire width is the width of the tire in millimeters (mm), measured from sidewall to sidewall. Since this measure is affected by the width of the rim, the measurement is for the tire when it is on its intended rim size.
R-tire construction designates that the tire was made using radial construction. This is the most common type of tire construction. Older tires were made using diagonal bias (D) or bias belted (B) construction. A separate note indicates how many plies make up the sidewall of the tire and the tread.
75-This number tells you the height of the tire, from the bead to the top of the tread. This is described as a percentage of the tire width. In our example, the aspect ratio is 75, so the tire's height is 75 percent of its width, or 176.25 mm ( .75 x 265 = 198.75 mm, or 7.80 in). The smaller the aspect ratio, the wider the tire in relation to its height.
Calculating the Tire Diameter
Now that we know what these numbers mean, we can calculate the overall diameter of a tire. We multiply the tire width by the aspect ratio to get the height of the tire.
Tire height = 265 x 75 percent = 198.75 mm (7.80 in)
Then we add twice the tire height to the rim diameter.
2 x 7.80 in + 16 inches = 31.6 in
This is the unloaded diameter; as soon as any weight is put on the tire, the diameter will decrease.
so let's calculate the tires that you want to put on there.
Tire height = 275 x 70 percent = 192.50 mm (7.60 in)
Then we add twice the tire height to the rim diameter.
2 x 7.60 in + 16 inches = 31.2 in
So essentially, you are asking if you will have to trim with a 31.2 tire vs the 31.6 you have now ;)
I think you know the answer to that :)
Drake 11-28-2007, 11:40 AM Now that you have been thoroughly schooled in tire sizing :thumbup: (don't worry... I needed the same help myself) I can tell you that I am running 270/70's on my '04 and I get some rubbing if I have the wheels cut all the way. But it's nothing too serious. Now since I have removed my mudflaps, I haven't noticed it as bad if at all but I also haven't had the wheels stuffed either. If you want to get some more lift from your tires, you will either have to get a BL or do some trimming.
NateDawgG 12-10-2007, 05:09 PM Your stock tire is a P265/75/R15 for example
P-Tire type:The P designates that the tire is a passenger vehicle tire. Some
other designations are LT for light truck, and T for temporary or spare tires.
265-Tire width is the width of the tire in millimeters (mm), measured from sidewall to sidewall. Since this measure is affected by the width of the rim, the measurement is for the tire when it is on its intended rim size.
R-tire construction designates that the tire was made using radial construction. This is the most common type of tire construction. Older tires were made using diagonal bias (D) or bias belted (B) construction. A separate note indicates how many plies make up the sidewall of the tire and the tread.
75-This number tells you the height of the tire, from the bead to the top of the tread. This is described as a percentage of the tire width. In our example, the aspect ratio is 75, so the tire's height is 75 percent of its width, or 176.25 mm ( .75 x 265 = 198.75 mm, or 7.80 in). The smaller the aspect ratio, the wider the tire in relation to its height.
Calculating the Tire Diameter
Now that we know what these numbers mean, we can calculate the overall diameter of a tire. We multiply the tire width by the aspect ratio to get the height of the tire.
Tire height = 265 x 75 percent = 198.75 mm (7.80 in)
Then we add twice the tire height to the rim diameter.
2 x 7.80 in + 16 inches = 31.6 in
This is the unloaded diameter; as soon as any weight is put on the tire, the diameter will decrease.
Dude, that was awesome! Thanks for the info. I was just wondering how the hell you figured the diameter of your tires when I stumbled upon this thread. Thanks!
dephep 12-11-2007, 04:47 AM yea, me 2, i printed it and stuck it in my x mod file, thanxs a ton.
soccerbrace 12-12-2007, 12:51 AM Hey no problem guys! Glad that I could help!-James
donnieashley 12-18-2007, 10:37 PM so noone on here is running 275/70/16s? i'm not currently running the 265/75/16 tires, i'm running the stock 265/70s. i'm shopping for new tires and wanted to see if anybody had the 275/70s and if they fit good. i want to go slightly wider and taller than stock. looking at the turning radius and how much room is in the wheel wells i'm not sure. they really crammed the factory tires in there let alone anything much bigger especially if its going to have a meatier tread than the General Grabbers that are on it right now.
Ricer-X 12-19-2007, 08:14 AM IM RUNNIN stock tire size, goodyear silent armor, i love these tires
i will be doin the BL and and bigger tires when my goodyears need to be replaced, ill most likely get the same tires i have now, just bigger!
ive got the 3" sl on now, im not doing the bl til i have a bigger set of tires on some new wheels
soccerbrace 12-19-2007, 09:14 AM so noone on here is running 275/70/16s? i'm not currently running the 265/75/16 tires, i'm running the stock 265/70s. i'm shopping for new tires and wanted to see if anybody had the 275/70s and if they fit good. i want to go slightly wider and taller than stock. looking at the turning radius and how much room is in the wheel wells i'm not sure. they really crammed the factory tires in there let alone anything much bigger especially if its going to have a meatier tread than the General Grabbers that are on it right now.
Well, yes, the 275/70/16 will fit, and the 265/75/16 will be a little stuffed if you have a first gen but it would work
json3904 12-19-2007, 10:46 PM im running 285/75/r16 with a SL and i did some minor trimming.....
donnieashley 12-21-2007, 10:45 PM youre running 285/75/r16s without a lift? and what do you consider minor trimming? can you forward me a few pics?
json3904 12-22-2007, 01:03 AM im running 285/75/r16 with a SL and i did some minor trimming.....
i have a 3" SL from ac.....
here are the pics i took... it isnt much but gives you a idea....
http://www.clubxterra.org/forums/showthread.php?t=1715&highlight=285%2F75%2F16
grady20 12-24-2007, 06:40 PM Yeah I got my 265/75/16 super swamper mts mounted recently and they rubbed like no other at first. I did some major trimming up front mainly to give the wheel wells more room and not make them look so stuffed.
json3904 12-24-2007, 07:40 PM show some pics......
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