NH T7 tractor tyre size/wheel weights

[benferg]

Down under I'm being told we can no longer spec a tractor with 650/65R42 tyres and have wheel weights on it.
Something to do with the max weight the tyre can handle (think it's also to do with Michelin)

I can get 710's on a 42 inch rim and still get wheel weights.

All the other machines are on 650's so for compatibility I want to stay the same. One of my T7.250's has wheel weights so stuffed if I know why they aren't bringing them in like that anymore.

Any comments appreciated.

 

[Gerbert]

Tell the dealer to buy them seperately and sort it?

 

[Cropwell]

We had 650/75 x38's on a T7.235

 

[daveydiesel1]

the 650 75 38 is a higher load rating tyre than a 650 65 42. The 650 65 42 is surprisingly low load rated considering its built for larger tractors so ul need to order with the 38 inch rim

 

[glasshouse]

Sounds nuts
Nh refused to sell me a tm 175 on 20.8x38 tyres in 2006, but case mxm 175 could come with that size

 

[benferg]

the 650 75 38 is a higher load rating tyre than a 650 65 42. The 650 65 42 is surprisingly low load rated considering its built for larger tractors so ul need to order with the 38 inch rim

is this across all brands?

was told that we could get 720 kg of weight for the 650 tyres
on the 710's we can put a ton of wheel weights on the back axle.

 

[daveydiesel1]

Yes a 650 65 42 is a lower load rating. To get the higher load rating it has to be the 650 75 38 as it has a larger air volume as does the 710

 

[gone]

Down under I'm being told we can no longer spec a tractor with 650/65R42 tyres and have wheel weights on it.
Something to do with the max weight the tyre can handle (think it's also to do with Michelin)

I can get 710's on a 42 inch rim and still get wheel weights.

All the other machines are on 650's so for compatibility I want to stay the same. One of my T7.250's has wheel weights so stuffed if I know why they aren't bringing them in like that anymore.

Any comments appreciated.

Standard 650/65r42 tyres are not up to most modern large tractors power and weight carrying capacity, but both Michelin and Bridgestone do an IF 650/65r42 with massive weight carrying and power capacity.
CNH offer these tyres in the 650/65r42 size as an option on the LWB 200hp+ tractors.

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[Gerbert]

The vf tyres need a wider rim, just so you know.

 

[benferg]

The vf tyres need a wider rim, just so you know.

what’s the VF tyre?

 

[michael N123]

As soon as you attach a big implement to the linkage your putting a lot more weight to the tyres than what any wheel weights can achieve

 

[Gerbert]

what’s the VF tyre?

Very Flexible. In short it's the same size tyre that can work on lower pressure with the same load. Or higher load on the same pressure, which kind of defeats the object.
Because they can flex more a wider rim is recommended.

 

[benferg]

I get nervous with low tyre pressures. I’ve had a tyre come off the bead one guy doing hill work.
I don’t need the drama so I don’t tend to go under 15 psi.
Auto inflation would be cool…

 

[mo!]

As soon as you attach a big implement to the linkage your putting a lot more weight to the tyres than what any wheel weights can achieve

That's fine when the mounted equipment is in the air, but when you drop in in the ground the weight comes off. Which of course is where draft control comes in. Kit like subsoilers and trio type cultivators shouldn't use draft and so wheel weights are useful. Trailed kit has no weight transfer either.

 

[michael N123]

That's fine when the mounted equipment is in the air, but when you drop in in the ground the weight comes off. Which of course is where draft control comes in. Kit like subsoilers and trio type cultivators shouldn't use draft and so wheel weights are useful. Trailed kit has no weight transfer either.

I was meaning if the tyres are on there limits with wheel weights how are they going to cope with implements

 

[daveydiesel1]

I was meaning if the tyres are on there limits with wheel weights how are they going to cope with implements

I would think its more that the tyres are at thier limits with the tractor and the typical implements being used in that region so therefore the wheel weights would possibly be overloadin the tyres