You’re right. We recommend that the Aeon® hollow rubber spring should not engage with the axle when the vehicle is unloaded.
And the reason is simple: A small gap (approximately 1 inch)* between the rubber spring and the axle is necessary if you want to maintain your unloaded ride quality.
But before you do anything, you need to determine whether or not you have a problem…
Here’s a short checklist:
- Is this a rear kit you are installing? (Front kits don’t require any gap.)
- Is the vehicle loaded or unloaded? Loaded vehicles need to ride on the rubber spring at all times.
- Do you have a partial load (like a truck cap)? Quite often, 200 lbs. is enough to drop the back end and cause the rubber spring to engage with the axle.
- Does the kit include a spacer? (A spacer looks like a hockey puck.) Spacers are optional, designed to help you adjust the overall ride height. If you have installed the spacer, simply remove it.
- Is your truck an older model (10+ years)? Your suspension may have relaxed (sagged) over the years. If so, check to see if the suspension can be adjusted to gain more height.
- Keep this in mind: Not everyone needs a gap to maintain acceptable ride quality. If you use your vehicle for commercial use, it’s to your advantage that the rubber spring sit on the axle at all times – even without a load.
If you need assistance, contact customer service either by phone, 1-800-263-3113, or email: sales @timbren.com
*Actually, the installation instructions recommend somewhere between ½” – 1 ½” gap.