2016 Ram 3500 SRW tire size

3500

Cabman 850 wrote:
Trying to get them to switch to 18" due to price and selection, but they would not budge. They have a truck for the same price, but it has the air suspension which I know nothing about.

Which weight class? 2500? or 3500? they're different for air suspension.

Trying to get them to switch to 18" due to price and selection, but they would not budge. They have a truck for the same price, but it has the air suspension which I know nothing about.

Yep, you have cheaper and a larger variety of options at 18" though. It's a far more common size. I think the Ford Superduty uses the same size as well for their 18" option. They have a taller 20" option.

Both the 275/70R18E and 285/60R20E have a 3,640 lb capacity at 80psi.

Looking at 2016 Ram specs shows the 18" and 20" tires at 3640 lbs
And both wheel sizes at 3500 lbs.

As poster above says check out tire prices/size choices and availability for a 18" and 20" LT E tires.

Cabman 850 wrote:
Looking at new trucks and notice that several new trucks are coming with 18 or 20" tires. I will be hauling a 4000 lb TC. Any preferences on size and why? Thanks in advance!

I'd get whatever you can get the highest load rating LT tires in for a reasonable cost. Right now I think 18" LT tires are a bit more common than 20". You might want to go to 19.5" if you can for commercial truck tires.