What is offset of 23’ 3500 SRW 18 inch factory wheels?

[STGS517]

I am wanting new wheels for my stock 3500. I am wanting to stay as close to stock as possible. Discount tire is telling me they think factory offset is around 20mm but I’m also seeing the number is 57 mm for a 18x8 with 6.75 worth of backspace. Anybody have a definitive answer? Thank you

 

[CJ99X]

https://www.wheel-size.com/size/ram/3500/2023/#region-usdm

 

[STGS517]

Thank you. Looks like the 57 ish number is correct based on that info.

 

[phatboy64]

+18 or +20 works fine if you are looking for aftermarket wheels