The 2003 ram 1500 4x4 slt that I have has the 20 inch wheels on it, but I am trying to find out if there is a way to determine the original wheel size. I want to buy some new rims and tires but my concern is that the 20 inch rims were added later by a previous owner and everything may be calibrated to work with a 17 inch wheel. ABS, suspension , transmission, etc. Am I spinning my wheels worrying about this?

 

Yeah, there's some wheel spinnin' goin' on. Wheel size is irrelevant. It's total diameter to consider. You can probably get 34" or 35" tires on it. Be aware: the larger the tire, the longer effective gear ratio, so if you have 3.55s, a larger tire will stretch that to 3.33 or lower. Smaller tires have the effect of shortening the ratio, closer to 3.80 maybe.

 

Is there any information on the door sticker?

 

you could also contact dodge and have them run your vin, That'll list everything your truck came with

 

It will contain the "base" info, but not the specific build-out data. The door placard probably says "245/70/17", but that won't mean much.

 

Usually if it has a power steering cooler that was a sign it came with 20's. To be sure, email Dodge. They used to have a site where you enter your VIN and you automatically get a build sheet, but it appears to be down/gone. They will send you one. My truck has info for the 17's on the door, but has a PS cooler AND the 20's (came with 3.92's) are on the build sheet.

 

Mine has a power steering cooler and it came with 17s.

 

mine also has a power steering cooler.. and has the trailer towing package.. and I have chrome 17's from the factory...

e-mail Dodge with your vin.. they will e-mail a total build data... has everything you ever wanted to know about your truck...
I did.. 2 years ago. and I bought my truck New..

 

Are you sure???
Pretty sure that the door sticker is mandated by the Feds which requires the manufacturer to provide relevant info which includes the paint codes and vin info.

Cuz my door sticker said 275/60/20 just as it came with as part of the BigHorn package.
My Yukon says 265/70/16 which is exactly what the window sticker sayss and that was an optional tire based on tow package.
My Buick gave exact tire size too which was based on the trim package.
Both mine and my wifes new Subi has exact 17/18" tire info which is optional....etc..etc so on so forth

 

Yep. My truck shows "245/70x17" because the build sheet doesn't reflect there. With the tow package, the "standard" tire is 265/70x17. Not sure why, since that lowers the rear gear by a pinch. A friend's '03 shows the same thing, even though it was born with 20s.

The "Vehicle Safety Certification Label" shows the VIN, type of vehicle, type of rear wheels (round?), "bar code", MDH, paint and trim codes and country of origin (already shown by the first digit of the VIN). It isn't intended to show specific details. The trim level might infer some other goodies, but wouldn't be definitive or detailed.