Tyre temperatures (1 Viewer)

[Andysprinter]

I suppose this question is more directed to those of you who have TyrePal. We are travelling south through Spain and our Concorde is fully loaded up to its limit of 6 tons (checked at weighbridge). As we go south I've noticed the offside rear tyres increase in temperature up to 39° & 85psi inner and 29° & 80psi outer. The nearside inner and outer rears are running at around 78° & 77° respectively at 32°. The euroliner trims are warmish but you can hold your hand on. Although we checked rear axle weight obviously the o/s could be overloaded but we have tried to distribute load. All the tyres are newish and discs and pads changed this summer.Should I worry or do you guys think it's within tolerance .
Today we'll be at Deltebre if anybodies passing.

 

[MR. FUSION]

I suppose this question is more directed to those of you who have TyrePal. We are travelling south through Spain and our Concorde is fully loaded up to its limit of 6 tons (checked at weighbridge). As we go south I've noticed the offside rear tyres increase in temperature up to 39° & 85psi inner and 29° & 80psi outer. The nearside inner and outer rears are running at around 78° & 77° respectively at 32°. The euroliner trims are warmish but you can hold your hand on. Although we checked rear axle weight obviously the o/s could be overloaded but we have tried to distribute load. All the tyres are newish and discs and pads changed this summer.Should I worry or do you guys think it's within tolerance .
Today we'll be at Deltebre if anybodies passing.

When I looked a Nigel Mansells Concorde for sale I commented that's a lot of bus on small tyres, so not surprised they are getting a bit warm!! Obviously as you know it looks like loading is very critical, but my take is your tyres are going to get warm no matter what.

 

[BwB]

Is the sun shining on one side of the van (tyres) rather than the other?

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[gerry mcg]

according to my tyre pressure monitor, the tyres on my BMW 335xd were at 55c when returning from the alps this summer - the ambient air temp was 35c and i had done a 6hr autoroute run at 130kph

 

[Andysprinter]

Thanks , actually BwB its the shady side thats running hotter!

Andy

 

[Bartyfixedit]

My last van was a VW LT which also had Euro liners. In the Alps I had quite a lot of problem with breaks overheating until I took the Euro liners off.
On the Fiat I have factory fit wheel trims and never have a problem with breaks overheating. I generally find that the tyre pressure goes from 5.5 bar cold to 6 bar running. I have tyre pal but I must admit I never look at the temperatures. If the pressures are okay then the temperatures should be too. I always do a walk round and check tyre temperatures by hand.

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[Jasz]

We had a similar occurrence in France recently, we had come down a long descent not long before stopping and the TyrePal started alarming soon after (for the temperature). I believe ours was also the rear (UK) offside, but we haven't had any problems with it happening since.

 

[funflair]

When I looked a Nigel Mansells Concorde for sale I commented that's a lot of bus on small tyres, so not surprised they are getting a bit warm!! Obviously as you know it looks like loading is very critical, but my take is your tyres are going to get warm no matter what.

But that's running on a truck chassis the OP will be on Iveco or possibly Merc but van chassis whatever.

Martin

 

[SUGGY]

POST DELETED

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[hilldweller]

Try using Nitrogen . it doesn't warm up as much so the pressure stays more constant ,
I have it in the Motorcycle , car and motorhome ,

AND before a get a load of sarky comments ... it works for me ,,

I get by on 78% Nitrogen, it's cheaper.

 

[funflair]

Hi @Andysconcorde i would think that was within range, I usually see about 10 psi above set point, I don't see much temperature rise but my sensors are flow through/inline type sitting behind the wheel trim so possibly not as sensitive as yours,the inner will see more heat from the discs though.

Martin

 

[Kybod]

Could the position of the exhaust pipe be affecting the temperatures ?

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[Andysprinter]

Thanks again guys. I don't think it's a braking issue unless I've got a sticky calliper because the temperature is constant and not due to descending hills etc. I'm sort of thinking of a loading issue ie bearings or tyres. The tyres are Goodyear Cargo's G26 that are rated at a ton each when paired. I'd like to think the brakes are ok having been serviced but then .......
Andy

 

[BwB]

Thanks , actually BwB its the shady side thats running hotter!

Andy

Ahh, yes. Probably to do with the little understood third law of thermodynamics in a rotating body...

No? Ok, I'll get me coat.

 

[mikebeaches]

Our TyrePal monitor periodically shows a rogue warning (or an unexpected reading) for no apparent reason. Appear to work perfectly 95% of the time, then suddenly one wheel shows too hot or cold, or no reading at all. It may be the sensor batteries require changing in our case.

Like the system a lot, but startled me first time I got an anomoly.

And certainly the indicated temperatures go much higher than I expected on a fast motorway run, but that doesn't of itself answer your query.

Hope you have a safe and event-free journey.

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[Andysprinter]

Thanks - Oh for the days when a kick of the tyres sufficed

 

[Lorryman100]

As long as the tyre is not so hot that you can't keep your hand on it and the pressure increase is around 10c I would not let it bother me but would keep an eye on it. In the UK I find that the nearside pressure is always a degree or two higher than the offside and put this down to the unevenness of the road, more potholes closer to the kerb resulting in more kinetic shock to the nearside tyres.

 

[TerryL]

I find that the pressures increase by around 10 psi by the time the tyres are fully warmed up, and it tends to be even, side to side. Temperatures however tend to be a bit fickle and I've seen first one side increase/decrease then later it's the other way round for no apparent reason - but as long as they stay within the recommended limits, as set up by TyrePal, I don't worry about it. On the occasion when it DOES seem to be getting a bit high I ask TOH to keep an eye on the pressures, watching for any decrease which would indicate a problem.

As regards intermittent erroneous readings, it's a battery needs replacing. Other than that mine have been reliable and keep me worry-free. But I never used to worry before I got them............!

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[Andysprinter]

Dear Andy


Thank you for your email,


Pressures are recommended and advised by the vehicle manufacturer rather than the tyre manufacturer.


When vehicle manufacturers calculate the pressures to use they advise cold pressures and take into account climatic conditions they may encounter.


We would recommend following their recommendations.


Regards


David Mullin
Technical Customer Support & Service

Was that helpful!!! Stick to Michelin!

 

[funflair]

Doesn't look helpful to me but I don't know what the question was.

What load rating are the tyres.

Martin

 

[Andysprinter]

Hi Martin,

I asked Goodyear their opinion about tyre temperature and pressure regarding safety. In the past I've had Michelin's and their tech people give you cold pressures for axle loading.
The load rating when used in a pair is 1 ton each. The Concorde is plated at 4360kgs but with these tyres that's reduced to 4 tons which is about how we are loaded. Don't normally have this much with us but that's a different story!
I emailed Goodyear back and said as the rear tyres are all at 70psi cold then all must be well and I'll ignore the screeching TyrePal alarm

Andy

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[Speve]

You can adjust your temp alarm for a higher reading at least it will stop alarming you!

 

[funflair]

As Speve says you could lift the upper temperature limit, the pressures don't look too bad so just watch it for a couple of days and make sure nothing is getting too hot.

Next time you change tyres it would be worth going for a higher load rating if possible as it looks as though yours are a bit light for the axle.

Martin

 

[Andysprinter]

Thanks Martin,

That's pretty much the conclusion I'd come to. Can't believe how unhelpful Goodyear were on a safety issue though,

Andy

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[Sidney]

I get by on 78% Nitrogen, it's cheaper.

If you fill your tyre with nitrogen the rate of expansion is pretty much the same anyway

However, 96% nitrogen contains less moisture and contaminants than compressed air. So I would imagine you'd have to suck out all the air in your tyres first to avoid contamination

Shame about the contaminants in the tyre itself eh? Because tyres give out CO2

 

[Wagoneer]

I read on a tyre website that it's desirable to keep within 90% of the load index.

I recently reshod the van and took the maximum permitted axle load, divided by 2 and added 11% to determine the load index required. This for 2 wheel axle (not twin).

 

[davejen]

according to my tyre pressure monitor, the tyres on my BMW 335xd were at 55c when returning from the alps this summer - the ambient air temp was 35c and i had done a 6hr autoroute run at 130kph

BMW ,130KPH???? Brakes stuck on????
Cheers, Dave

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[PeteH]

Interestingly, I recently fitted a set of tyrepal sensors (Solar4), First time out The temperature of the NSF went over and screamed at me!. The issue was a sticking calliper, 5min with a lump hammer cured that!. Let is cool to below set temp and continued had no further issues that weekend. I subsequently Serviced both front brakes.

Pete