stainless or copper

which do u guys prefer for hardlining a air system and where is the best place to buy

i like how easy copper is to bent and run but i love the way stainless looks but cost alot more and in result you have to use the swedge lock fitting witch cost an ass load. but a cheaper alternative is alluminium lines

Copper is cheaper but u just cant argue with how nicely stainless looks under there I wouldnt go aluminum if i were u not really sure who would be the best locally for u or r u looking at anywhere online?

i use dom alum. .......like i said cock star

Here's a question (to add to your question!):

Has anyone actually had a copper line break on their air system?
I've always been told not to use copper line in an automotive environment due to work hardening from drivetrain vibrations, but I've seen lots of copper on lots of rides and I've never actually seen a failure!
Has anyone else seen this happen?

ive got copper lines on mine, only problem ive had was a fittin loose grip and the line blow out but since i switched to parker fittings i havent had a problem since

I would use stainless because one day someone might steel the copper. I am in the HVAC industry and it is common to hear about copper being stolen.

that would suck ass you go out to your truck and someone stole all you copper air line

im lookin at runing copper line on my truck at lowes it cost about 103.99 for 50 feet of it

I used stainless steel on my truck. Lot more work but I think its looks better.

I ran copper on mine, and it was dailied for 2 and a half years 365 days a year, salt snow rain, no problems at all. Copper is super easy to work with, just take your time and don't oblong the line, or it will never seal right. Stainless is much nicer to look at, but it costs a lot more, and is harder to work. Although stainless is good to like 3000 psi where-as copper in the same size (1/2 id) is only good to 640 or so. Either way I always liked to wax my copper when I installed it too...keeps the corrosion down to a bare minimum.