I know the chromoly should be a bit lighter, and wont rust, but whats your opinions? I think im going with the BMR steel tubulars for $109, or the chromos for $139. Worth the extra $20?

Aaron

 

Aluminium rod ended

 

The cromoly are much stronger and worth the extra money.

 

How are they much stronger... they use a thinner walled tubing, thus it is the around the same strength, only a reduction in weight, that is why chrome moly is used in roll cages and chassis and such.

Unless your cutting 0.75 60' times, aluminium arms will work with the proper wall thickness.

 

I know that chromoly tubes are slightly thinner to reduce more weight, and they are suppose to have the same strength... Does anyone know just how much lighter they are? If its only a few pounds a piece I'll save my $20.

Aaron

 

Maybe 5lbs... with "my" aluminium design, you'll save about 2.5lbs over stock... and retain more strength, and it has rod ends. Much better for suspension articulation than polyurethane which has no give to it.

 

You sure about the strength of aluminum. Its so stiff/rigid it tends to weakin itself over time.

Aaron

 

Aluminum does not have the fatigue resistance to make a good LCA. That's why everyone uses 4130 chromo and steel.

I'd go chromoly.

-Mindgame

 

OK... well I'll hold you to that after I install them and run them for several thousand miles

Aluminium is stiff, not strong, there is a great difference, same goes with composites.

 

Mild steel is fine. Has anyone ever bent the stock stamped pieces? So strength isn't an issue. Saving a couple of pounds on a 3,500+lb car? Not a high priority in my book.

Rich Krause

 

A few pounds of unsprung weight in our live axle rear suspension cars = slightly smoother ride.

The stock stamped peices flex considerably.