Helper Spring Recommendation for 2021 Toyota 4Runner Towing 3700 lb Travel Trailer

Question:

I'll be towing a 3700 lb travel trailer with my 2022 Toyota 4Runner. The tongue weight is right at 400 lbs. Which helper spring option would be recommended to remove the sag from the rear suspension?

asked by: Stephen

Expert Reply:

Of the available choices, I prefer the SumoSprings # SS68DR which would provide up to 1400 lbs of additional support for your rear suspension which would work great to counteract the tongue weight of your travel trailer. Not only will the SumoSprings prevent sag from the tongue weight of your travel trailer being applied to the rear suspension of your 4Runner, it'll also minimize sway and body roll in turns. Unlike the # F4135 air helper spring you'd looked at, the SumoSprings will never puncture or leak, and require zero maintenance.

expert reply by: Mike L