I just bought a 2003 f150 with 4x4.....whats the largest tires i can put on this truck without trimming i dont mind if i have to trim a little im excited man i got this truck for a song on ebay
42,000 miles mint!....i have 4 brand new tires on it if anyone wants to buy them i wanted to beef up the look a little thanks man any input would be awesome!
Den

 

285's fit, i think some guys fit 295's and 305's with trimming.

 

Any guys out there have pics with 305's on stock 4x4?....im diggin this forum....lol

 

IF i buy 305's for stock 4x4 what would i have to trim?...not sheetmetal right?...if its just mudflap stuff i dont care

 

ahhh, 305 what? Thats only the tire width.

 

I dunno thats why im asking...lol
i saw another thread about 315's ??????????????????
What should i look for i'd like the biggest tires i can fit

 

if you ask me about sheetmetal fabrication or building one off custom choppers i can help ya....lol
www.sickchopperz.com

 

 

Plan on using factory wheels, are those 16" that also looks like a 7700 series, not sure the specs on those wheels? If you go to the wheels and tire section there is a sticky at the top of the page I wrote titled "Calculating Tire Size". Read the first post and you should get a better understand. After that maybe you can fill us in a little more. Sorry cant provide the exact answer yet, we need just a little more info. We will get there soon.

 

Saw a dude with a burgandy truck with 315's no lift ON THIS FORUM SCREENAME WAS NINEZEROFOUR sumthin bout crankin bars?.....im on the edge of my seat man i bought the truck on ebay its a teddy bear garage kept korean guys only took it out to tow his boat we'll get there bro....im just anxious...i been searching for this truck for years....40,000 miles mint black 4x4

 

HERES LINK TO HIS FORUM PIECE

http://www.f150forum.com/f6/can-i-fit-38231/index2/

 

Here I copied what I posted in the sticky for you. You have to understand the first number is just the width, that falls into a calculation for overall tire size. In other words a 305/50/18 is not near as tall as a 305/65/18, yet the are both the same width.

Also, to answer part about tbars or torsion bars they are your front suspension "spring" except it works from torsion or twist to provide support and a spring action, much like a coil spring. By cranking or preloading them your truck will sit higher in the front, allowing for larger tires.

I often see people inquiring about metric tire sizes and what they are equivalent to in inches. For those who do not know how to convert a metric tire size to an inch equivalent I wanted to post this. Hopefully you can find it helpful.

Let’s use a common stock tire found on the F150:
275x65x18
275 = width in mm
65 = aspect ratio, this is the side wall height as a percentage of the tires width
18” = rim size in inches

To convert this tire to standard units (inches) use the following steps:
(NOTE: I round to the 100th place)
1. Convert the width in mm to inches: 275/25.4 = 10.83" (25.4 mm = 1 inch)
2. Calculate the sidewall height: 10.83 x .65 = 7.04" (don’t forget the decimal as this is a %)
3. Calculate final tire height: (total sidewall = sidewall x 2) 7.04" x 2 = 14.08". Now add your total sidewall height to your rim size, 14.08"+18" = 32.08"

This means a 275x65x18 is ~32.08x10.83x18

Hope this helps.....

 

http://www.youtube.com/watch?v=vZnUcCyPe0o

 

So if i tell you what these tires say...you can tell me the biggest tires to buy?

 

That would be a starting point. Also can you verify if that is a 7700 series basically a non superduty f250, looks just like a f150 but with heaver suspension. At one time they were badged as f250's but were later called a f150 7700 series. If you can let me know if its that or not I will go find your wheel specs. After that I can give you tires sizes.

Trying my best to help here....