New tires on my 1984 Chevy Ton truck and now the back end seems to be

[joefromga]

Do some burnouts.

 

[Stanley B]

looks like u don't have enough tongue weight. i have a 2001 4 door chevy 1 ton dually an when i load anything on trailer i first measure the bumper height and after loading make sure bumper goes down at least 1" to 1 1/2". if not heavy enough the trailer will fishtail. i have a 20' car hauler with steel bed and have hauler more than i care to remember. if you have to, bring out a bathroom scale and measure the tounge weight on the dolly wheel. my trailer is long enough to pull forward to get that bumper drop. that backhoe i think is heavier than loader and engine. hope this helps

I'm pretty sure I have plenty of tongue weight...the new tires feel this way with JUST the truck.....and with the trailer too.....I'm going to try to get some miles on the new tires and see if it settles down.....the old worn out tires felt solid as a rock....while pulling the tractor too

 

[whis]

as mentioned before tread depth is causing it, make sure they are air up to max pressure

 

[Grateful11]

Never heard of them, looks like a Chinese company. We try to avoid Chinese tires but it's getting harder and harder to do.

Company History | Sailun Tyres Europe

 

[TheMadOne]

I was always told that the culprits are both the taller lugs and the release compound used to free the tires from the molds. It supposedly takes about 400-500 miles for the compound to wear off. I can't say I noticed on my 1/2 ton, but the stock tires-cheap OEM Wrangler SR-As-were so miserable that the new BFG AT KO-2s were heaven in comparison.

 

[Toddao]

As they wear down they will become more stable , we have seen this on our work trucks, more in the 22.5 & 19.5 with the " winter deep" tread. Hence the "deep" maybe too deep giving feeling of un stability

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