Community Forums

buxtonworks · 11-26-2015, 07:29 PM

I run a 255 70 22.5 front tire about 10.5 inches would like to run a 12 inch tire front only. cant seem to find it.

Mr_D · 11-26-2015, 07:38 PM

The various tire manufacturers print specification lists. Have you looked at them?

Rockwood27 · 11-26-2015, 08:33 PM

A 12" wide tire is a 305 metric size.

Mr_D · 11-26-2015, 08:39 PM

Quote:

Originally Posted by Rockwood27

A 12" wide tire is a 305 metric size.

I went from 275/70's on the front of our '02 DSDP and put 305/70's on. Had to get wider rims (9" wide) and the tires did hit the lip around the opening if I let the air down. Did that only once but it was enough to break the lip. The 305's were about ½" larger and 1" wider but it was enough to cause problems.

kimbo · 11-27-2015, 06:00 AM

don't know what type unit you have! if gasser go for it? if dsdp with air bags nope!

George Schweikle · 11-27-2015, 07:12 AM

The way to accommodate a wider tire without increasing diameter is to reduce the aspect ratio. Like changing from a 275/70 to a 305/60 (or less). There is a lot of opportunity to do this with car tires (I use 275/35 on our autocross car), but I don't know if RV - truck tire sizes come with this much variation.

There are on-line calculators to research dimensions for different tire sizes. Just Google "tire size calculators"

Also, over the years I have found that tire dimensions as provided by individual manufacturers are approximate. One company's 275/70 may not be the exact dimension of that size from another company. I even found this from the same manufacturer of race tires; this years same size was slightly different than the same size of the previous version.

Quote:

Originally Posted by Mr_D

I went from 275/70's on the front of our '02 DSDP and put 305/70's on. Had to get wider rims (9" wide) and the tires did hit the lip around the opening if I let the air down. Did that only once but it was enough to break the lip. The 305's were about ½" larger and 1" wider but it was enough to cause problems.

buxtonworks · 11-27-2015, 10:20 PM

thanks all I loaded a tire calculator but all wider sizes are also to tall ill try a metric size

Ray,IN · 11-27-2015, 10:30 PM

You'll need to buy wider rims too. Then you run into tire clearance for the steering linkage, fenders, wheel well, etc. Measure twice, buy once.

buxtonworks · 12-20-2015, 10:24 PM

Iv got 255 70 22.5 tires on my monico wanting to run a 295 60 22.5 on front same overall size just a little wider but holds more the a thousand pounds more weight Looking at a Continental hsl2 tire anyone ever use them. monico 30 pbd

Gordon Dewald · 12-20-2015, 10:39 PM

Quote:

Originally Posted by buxtonworks

Iv got 255 70 22.5 tires on my monico wanting to run a 295 60 22.5 on front same overall size just a little wider but holds more the a thousand pounds more weight Looking at a Continental hsl2 tire anyone ever use them. monico 30 pbd

In all likelyhood the tires on the axle already are a higher rating than the axle. Installing bigger tires will not change the front axle rating. If you put bigger tires on and add weight you could be over the axle rating.

Rockwood27 · 12-21-2015, 05:35 AM

Quote:

Originally Posted by buxtonworks

Iv got 255 70 22.5 tires on my monico wanting to run a 295 60 22.5 on front same overall size just a little wider but holds more the a thousand pounds more weight Looking at a Continental hsl2 tire anyone ever use them. monico 30 pbd

The wheels are also load rated. You can't overload the wheels, as well as the axles. There should be some sort of identification mark on the wheel for load capacity.