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THE Great porter wheel mystery ? (19 posts / 2,562 views)
oldgeezer oldgeezer
Posts: 27,037
Mr Linky Poo
Mr Linky Poo Post #1 4 Jul 2020 17:59
0
The Fox Explorer Barrow wheel is 350 x 8 ....25 psi MAX and there have been a number of people reporting the tyres exploding in the hot weather ?

The Prestige Portalight barrow wheel is ALSO 350 x 8 ...25 psi MAX and I have never heard of one exploding ?

SOOO I thought the tyre must be a cheap v expensive one ?

BUT NO ! here is a picture they are totally identical wheels and tyres tread pattern all the same
! one is a portalight the other the fox

so the only logical answer must be surely people are over inflating past 25psi ? so inflate to about 18-20psi to allow for expansion in the heat

carpy09 carpy09
Posts: 14,236
Post #2 4 Jul 2020 18:06
0
In reply to Post #1
Yep defiantly people over Inflating them I did the same on my carpporter thin wheel and it blew a massive hole in the side wall
sundance sundance
Posts: 6,762
Post #3 4 Jul 2020 18:13
0
i will be safe then 10 year powerporter never pumped it lol
mark1009
Posts: 4,738
Post #5 4 Jul 2020 18:36
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I've had tyres explode on me before so I asked prestige what psi to use. They said 20 in hot weather.
shane24 shane24
Posts: 904
Post #6 4 Jul 2020 18:50
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In reply to Post #1
I've never had a problem with this until last year when my Carp Porter Wideboy wheel burst whilst in my car on a hot day.

I've packed up today after a couple of days and upon putting my barrow into the car I've noticed the side wall of the new wheel I bought last year has perished and is splitting.
I only inflate it to about 20psi or so.

Think I'm going to get the puncture proof wideboy one as a replacement.
Old-Cornishman
Posts: 688
Post #7 4 Jul 2020 19:07
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In reply to Post #1
Do any of these tyres have a date stamp?
oldgeezer oldgeezer
Posts: 27,037
Mr Linky Poo
Mr Linky Poo Post #8 4 Jul 2020 20:32
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In reply to Post #7
no but it does say 25 psi max pressure and of course if you put 25 in on a hot day they will go way above this and burst I have got mine at just under 20 psi now
Glenn_B Glenn_B
Posts: 1,804
Post #9 4 Jul 2020 21:06
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In reply to Post #8
Great thread mate. I put my tyre at 25 psi the first time I used it and it looked under inflated when loaded. Earlier today inflated to 30 and now you post this. Looks like I'll be letting it down tomorrow😂😂😂
oldgeezer oldgeezer
Posts: 27,037
Mr Linky Poo
Mr Linky Poo Post #10 4 Jul 2020 21:20
0
In reply to Post #9
I suppose you could make it bomb proof like this maybe ? Trailer Tyre - 4-ply 350 X 8 Max load 170kg @ 2.5 BAR
LINKY POO

Any tyre fitter on here comment ?



Old-Cornishman
Posts: 688
Post #11 4 Jul 2020 21:30
0
In reply to Post #8
The date is definitely a legal requirement for road tyres and I've also seen dates on off road ones but obviously China doesn't bother with it.

Not too sure about off road tyres but normally an excess pressure is recommended to seat a tyre on the rim when being fitted. Either way a tyre should be able to withstand its maximum working pressure without risking a burst.
An extra 30 degrees in a car or van could give an extra 5 psi so if these tyres are very marginal in their design then dropping the pressure sounds a good plan

Perhaps country of origin might be a consideration when we buy tyres?
oldgeezer oldgeezer
Posts: 27,037
Mr Linky Poo
Mr Linky Poo Post #12 4 Jul 2020 22:26
0
In reply to Post #11
mate they are not trailer tyres ?

and not legal for road use they are wheelbarrow tyres I have posted below a 4 ply tyre though
bmwbiker09 bmwbiker09
Posts: 233
Post #13 4 Jul 2020 22:58
0
In reply to Post #12
Hi mate. My buddy owns a tyre garage and I had this problem with my porter wideboy splitting.
He told me tyres are not a very good make and recommended the wheelbarrow tyre
Only problem was it was a lot narrower than the wideboy one I had.
Still working at the minute though so must be ok
Old-Cornishman
Posts: 688
Post #14 5 Jul 2020 07:03
0
In reply to Post #12
7That tyre you've linked to looks better and obviously should have a good safety margin especially if you reduce the pressure to allow for some increase due to heat.

As we all know there is some risk buying online without recommendations and I think the bmw man has probably gone the safest way of going to a tyre garage. They wouldn't normally sell rubbish.

Just for interest my old wheelbarrow tyre has a date stamp on it ,1998 and is well overdue for a replacement but still holds air.
Greekskii Greekskii
Posts: 3,434
Post #15 5 Jul 2020 07:14
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Best thing I ever did was get a puncture proof tyre. Slightly more effort to push but never have to worry again. Learnt the lesson when I got a puncture and had to barrow 1km across a field with a full barrow of kit back to the van, stopping to inflate the tyre every 50m
donkeypunch donkeypunch
Posts: 1,154
Post #16 5 Jul 2020 08:32
0
In reply to Post #15
Take it to a decent tyre place and get it filled with nitrogen like your car tyres, it's not effected by the climate fluctuations.
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