Tires (Skinny)

[Kcd]

Another tires size question. I suck at relating to tire sizes. I am interested in more of a skinny tire option. What are some skinny tire options for stock 18 inch wheels on a trail boss that will fit without a level or lift. I was thinking 295 70 18 or 285 75 18 how about 305 70 18 ? Any help is much appreciated. Thanks guys 

[Black02Silverado]

Use a tire size comparison tool like this one.  Tire size calculator.  What you might run into is a tire you want to run but find out it isn't made in that size in the brand you want.  To go tall also increase the middle number.  Like 295/70/18 is not as tall as a 295/80/18.  It is the same width but not as tall.

[AJMBLAZER]

305 will be 12-12.5” wide so not really skinny. 

[newdude]

Skinny compared to all of those sizes would be the stock tires which are 275mm wide.  285 is wider, 298 is wider than both.   

 

 

 

Edited April 24, 2021 by newdude

[Kcd]

Ok this is helping a lot. Thanks for the replies. Maybe I should have said I want taller skinner tires from the stock Wranglers. 

Maybe taller and same width or both taller and skinner. Thanks Guys

Edited April 24, 2021 by Kcd

[redwngr]

265 or 275 or 305 is the width of the tire in millimeters (mm)

Divide by 25.4 and you have the width in inches.

 

The next number (50, 65, 90 etc) is the ratio of the sidewall height to the width. 

 

So a tire with a 75 is taller than a 65, IF the are the same width. 

 295/70  has a sidewall that is 295 x 0.70 = 206.5 mm (206.5/25.4 = 8.13)

 

285/75 will have 213.8 mm sidewall --  8.41" --- so it will be taller than the 295/70

 

And the last number is the rim diameter in inches. 

 

 

Many of the tire chains and tire manufacturer websites have calculators giving data for single sizes and/or for comparing sizes.

 

 

[newdude]

1 hour ago, Kcd said:

Ok this is helping a lot. Thanks for the replies. Maybe I should have said I want taller skinner tires from the stock Wranglers. 

Maybe taller and same width or both taller and skinner. Thanks Guys

 

Taller tire with taller sidewalls with no width increase go with a 275/70R18.  So a 33 inch tire vs the stock 275/65R18 which is a 32.1 inch tire.

 

Nothing that is "skinnier" (so like a 265 wide tire) will be taller really.  265/70R18 is almost the same as stock (32.5 inch tire vs 32.1 stock).

 

If you want taller than a 33 inch tire, you've got to go wider to get there so 285 at the narrowest.  285/70R18 or 285/75R18.  

 

Edited April 25, 2021 by newdude

[Kcd]

So I guess the next question is will 285 75 18s fit stock suspension no level no lift? Thanks 

[Gangly]

In simple terms for modern tire size identification: ******/XX/XX

First number is tire width in MM

Second number is the sidewall height given as a percentage of the first number(width)

Third number is wheel diameter

 

so

275/65/18

Width is 275mm

Sidewall height is 65% of 275mm: 179mm

Tire is for a 18 inch wheel

[Gangly]

22 hours ago, Kcd said:

So I guess the next question is will 285 75 18s fit stock suspension no level no lift? Thanks 

That comes out to a 34.8 inch tire.  All manufacturers are different and some running slightly bigger than advertised while others run slightly smaller than advertised.  However, as long as you are on factory wheels it should fit just fine.  If you go to an aftermarket wheel with different offsets, you will most likely rub.

[pierre sucre]

On 4/26/2021 at 1:27 PM, Kcd said:

So I guess the next question is will 285 75 18s fit stock suspension no level no lift? Thanks 

I ran across this site when looking into a similar question.  It's for wheels, but you can compare tire sizes too.

https://www.wheel-size.com/calc/?wheel1=265-70-18X8.5ET26&wheel2=285-75-18X8.5ET26&fcl=50mm&wcl=30mm&scl=50mm&sr=0mm

 

The "fit" of a different size tire always involves some compromise in terms of fender/suspension clearances.  I would expect 35" tires might rub at full suspension travel or full turn lock.  I thought I saw somewhere that 33's were the largest "no issues" tire.  33"s ~= 275/70-R18.