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More stability on my Isuzu V-Cross Pickup


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Many, including myself, complain about the instability of a pickup, they are a little too light in the "butt".
Have heard that some people put bags in the back of the load compartment, but how many kg are enough to improve stability? Where is the perfect weight to get maximum stability / performance / consumption?
100kg? 200kg? 300kg? Anyone know? Sweetspot?

Edited by PAV123
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11 hours ago, PAV123 said:

Anyone know? Sweet-spot?

All truck were designed to carry weight in back and the suspension used is the problem.

People here buy trucks to use as a SUV as I see it and 4 door trucks are better rear handling empty than say a single cab 2 door truck with an empty back.

 

Putting 2 bags with 50 kilos of sand in each in the rear by the wheel arches would help. 

 

Our Isuzu smartcab is in-between and when its loaded its fine as far as trucks go.

We only use as a car now, so the way I compensate the rear end is reduce recommended tyre pressures in the rear, that gives it a better feel.

 

I will replace the rear shocks when it gets a bit older the air shocks are only any good when the truck is loaded.  

 

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35 minutes ago, Kwasaki said:

Putting 2 bags with 50 kilos of sand in each in the rear by the wheel arches would help. 

Make sure the bags are secured so they do not fly thru the back window in an accident.

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3 minutes ago, canthai55 said:

Make sure the bags are secured so they do not fly thru the back window in an accident.

Only remember someone telling me as a solution I wouldn't do it myself.

Had a 4D Vigo truck and changed rear suspension to a softer one and the 29 psi front and rear was fine.

 

With the smartcab Isuzu it comes with 40 psi in rear 29 front so with nothing in back I put 29 psi in the rear to its much better and helps the suspension which is the problem. 

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On 4/5/2021 at 1:53 PM, Kwasaki said:

 

 

Putting 2 bags with 50 kilos of sand in each in the rear by the wheel arches would help. 

 

 

Agree with the amount but placement is a bit odd for many reasons.

 

Back in the 70's we used the same amount BUT tucked into the front corner of the rear section on each side. (FC Holden ute)

Reason there was, without it, the tyres would scrub and wear out like crazy.

So obviously arseend was skidding around, dangerous stuff.

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1 hour ago, bluejets said:

 

Agree with the amount but placement is a bit odd for many reasons.

 

Back in the 70's we used the same amount BUT tucked into the front corner of the rear section on each side. (FC Holden ute)

Reason there was, without it, the tyres would scrub and wear out like crazy.

So obviously arseend was skidding around, dangerous stuff.

Well as I said " Only remember someone telling me as a solution I wouldn't do it myself."

If people here want to use a truck like a car then buy a Honda truck, the only problem is they won't sell em in Thailand.

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On my Toyota I removed one layer of the 3 layer suspension and added some adjustable air suspension, a huge improvement

and with heavy loads I adjusted the air suspension accordingly

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My car isnt a pick up, but changed tires from height 50 to 55 rate, just little over. However i noticed it was less stable.

For now i live with it , but when i have to change again, i will go back to 50.

So changing your tires can effect stability, maybe have tires not that high you have now.

 

As mentioned also air pressure is important. If you have way more pressure in the back tires (because of load which you dont have) it effects when having no load. Pressure too high and you could be bouncing on the road. Mostly you have in the car a table of pressure and load. Have some less air in the back then. You can find table at the drivers door.

 

Dont mix up bars with psi, optherwise it goes wrong. Had college once and we were really bouncing ont he road.

Asked him what happened with car and he said he adjusted air in tires, but turnend out he mixed up the numbers.

We fixed to right numbers and then all was good. Just a little mix up in reading table. 

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On 4/5/2021 at 11:37 AM, Surelynot said:

Any increase in the weight (technically mass) being hauled will be detrimental to performance and consumption.......I do wonder however, why anyone needs to improve the stability .........it is a pickup......driven sensibly, stability would never be a problem.

Thais think they can drive them like they do in the TV adverts.... 

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22 hours ago, jumbo said:

On my Toyota I removed one layer of the 3 layer suspension and added some adjustable air suspension, a huge improvement

and with heavy loads I adjusted the air suspension accordingly

Air Bags are the way to go.

Best of both worlds - soft ride empty and no decrease of load carrying capacity.

 

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