21+ IRS SAG issues when towing product design (looking for someone in Michigan)

[dbphillips]

Met a guy with a Silverado and he swore there was an extended bump stop solution for the SUVs, but no, I didn't find it.

 

[Polo08816]

In my case, the 650lb tongue w/WDH pulls my 2021 Yukon rear down 1 inch and front raises 1/2 inch. My model doesn't have air bags. This is perfectly stable towing and no complaints but I'm just wondering.....

IF I add the 35% stronger rear springs and let's say the rear only goes down 1/2 inch instead of 1 inch - will the front still go up 1/2 inch? or less? A recent comment suggests the front will still go up the 1/2 inch and this is consistent with some youtubes I saw.

Bottom line, for me, just wondering if adding stronger rear springs would have significant benefit. How about down the road and I have an 800lb tongue weight trailer (with WDH) instead of the current 650lb? What if we load the full 1400lb worth of cargo (tonque + us = room for ~450lbs of junk)?

Are you referring to this?

2021-2023 Chevrolet/GMC Suburban/Tahoe/Yukon/Yukon XL Rear Coil Spring

Year: 2021, 2022, 2023 Make: Chevrolet, GMC Model: Suburban, Tahoe, Yukon, Yukon XL Part #: 351-921HD Type: +35% carrying capacity over OEM stock springs Position: Rear Drive: 2WD/4WD Rate: Variable Rate Remarks: Independent Rear Suspension Only This heavy duty rear coil spring kit is...

www.hdcoilsprings.com

FYSA, it's advertised as "+35% carrying capacity over OEM stock springs" but that doesn't mean the spring rate is 35% higher.

 

[tagexpcom]

Are you referring to this?

2021-2023 Chevrolet/GMC Suburban/Tahoe/Yukon/Yukon XL Rear Coil Spring

Year: 2021, 2022, 2023 Make: Chevrolet, GMC Model: Suburban, Tahoe, Yukon, Yukon XL Part #: 351-921HD Type: +35% carrying capacity over OEM stock springs Position: Rear Drive: 2WD/4WD Rate: Variable Rate Remarks: Independent Rear Suspension Only This heavy duty rear coil spring kit is...

www.hdcoilsprings.com

FYSA, it's advertised as "+35% carrying capacity over OEM stock springs" but that doesn't mean the spring rate is 35% higher.

Thank you for the comment. It's nearing a year of ownership and 6000 miles of towing and only 1" sag in the rear (hardly noticeable) and the rig is operating/towing smoothly - so I think I'm just 'over noodling'!!

 

[dbphillips]

Thank you for the comment. It's nearing a year of ownership and 6000 miles of towing and only 1" sag in the rear (hardly noticeable) and the rig is operating/towing smoothly - so I think I'm just 'over noodling'!!

Watch your tires like a hawk - the dealer won't.