Why do aluminum and crhome rims lose beads - Off-Road Forums & Discussion Groups
Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

 
LinkBack Thread Tools Display Modes
post #1 of (permalink) Old 01-07-2001, 11:23 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Why do aluminum and crhome rims lose beads

I can understand the chrome part, Chrome is pretty slick, but I really can't figure out why aluminum rims lose beads. Today I finally got out to do a little wheeling. We had a group of 4 Jeeps. The guy with chrome rims never airs down under 7PSI, because we will lose a bead, even at 7 PSI, the beads leak, and slowly loses air. We also had a guy wit aluminum rims with us. He really didn't lose a bead but snow got pack between the rim and tire causing it to leak. Not sure what PSI he was running. I run painted spoke rims, and regularly run 2 psi in deep snow, but was only down to 4 PSI today. In 4 years of wheeling with these rims, and low air pressure, I have yet to lose a bead. The only time I lost a bead was when I borrowed the first guys chrome rims and his tires, Poped a bead at 8 PSI. Maybe my question should have been, Why do painted steel wheels hold on to the bead so well?

Thanks, Ray

Sponsored Links
Advertisement
 
post #2 of (permalink) Old 01-08-2001, 12:13 AM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: Why do aluminum and crhome rims lose beads

Painted steel is much rougher than aluminum, be it cast, forged, or anything else... That's a guess. What is even more amazing than that is the propensity for aluminum wheels to develop bead leaks when run at normal pressures. I work at a Sears Auto Center, and every day we get at least 4 people in with fancy aluminum wheels (factory or otherwise) that have bead leaks...from corrosion, oxidation, or for unknown reasons. It's very unusual. Combine that with the fact that aluminum is much easier to mar with a rock than steel, and it's amazing that as many people run aluminum rims as they do. Unless unsprung weight is a huge concern, steel is probably a better choice...

Moneyless, Will weld for jeep accessories.
post #3 of (permalink) Old 01-08-2001, 06:47 AM
 
Join Date: Sep 1999
Posts: 2,006
Thanks: 0
Thanked 0 Times in 0 Posts
 
Re: Why do aluminum and crhome rims lose beads

You might also consider the tire. That and the fact that rim size (width) can be a factor also. I have been running American Racing Outlaw II's (15x8)for about 5 years now and seem to be ok running BGF MT's and Remington Mud Kings (33x12.5) down to about 5psi only run the front wheels off the rims once in about 18" of snow. I attribute this to the driving rather than equipment failure. My son just came back from a run with some guys after doing some upgrades to his Zuki, he told me that the wheels he put on were coming off and his old ones were going back on, (he lost a front and rear bead) The 10" wheels were not holding his tires at 7psi. (he traded tires and wheels with his pick up). Truck has 10" wheels and Zuki has 8" wheels same tires BFG MT's on both.
GP'n

GP'n is offline  
Sponsored Links
Advertisement
 
post #4 of (permalink) Old 01-08-2001, 10:02 PM
**DONOTDELETE**
Guest
 
Posts: n/a
Re: Why do aluminum and crhome rims lose beads

I started the day at 7 PSI, and I eventually had to air down to 4 PSI, because I drove into a ditch and couldn't get out. At 4 PSI I drove right out. I couldn't imagine having to four wheel in snow and not be able to air way down. When I am down at 2PSI, I can drive almost anywhere in deep snow. The traction differance between 7 PSI and 2 PSI is incredibe.

Thanks, Ray

Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Off-Road Forums & Discussion Groups forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome