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BigJimny Meet 2019 (17 May 2019)

BigJimny Meet and off-road driving day



20TH OCTOBER 2019

BOOKING NOW CLOSED


If you have booked you will shortly receive joining instructions- See HERE for discussion


Noggin and Natter - pre-event chat - Old Bell at Grazeley (part of hotel) 7:30pm 19th October

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Andy's 2019 Blue SZ5

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30 Apr 2019 19:46 #207010 by mlines
Replied by mlines on topic Andy's 2019 Blue SZ5
What does the tyre pressure plate inside the door say?

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Martin

2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses

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30 Apr 2019 19:49 #207011 by Andy2640
Replied by Andy2640 on topic Andy's 2019 Blue SZ5
Hi Martin,

I'll go have a look. Although does it still count? as in.... ive changed the stock tyres.

A wise man once said...... When we are Mean, Shout at People, Lose our Tempers, Swear, and generally act like Tool Bags, Never forget ..... We are all Cavemen in Suits, Uniforms and/or Overalls ..... Living in Semi-Concrete Jungles. Andy - 2019 AD.

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30 Apr 2019 19:51 #207012 by mlines
Replied by mlines on topic Andy's 2019 Blue SZ5
But the new ones are pretty much the same size?

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Martin

2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses

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30 Apr 2019 19:53 #207013 by Andy2640
Replied by Andy2640 on topic Andy's 2019 Blue SZ5
Kinda... 195/80/15 to 215/75/15

A wise man once said...... When we are Mean, Shout at People, Lose our Tempers, Swear, and generally act like Tool Bags, Never forget ..... We are all Cavemen in Suits, Uniforms and/or Overalls ..... Living in Semi-Concrete Jungles. Andy - 2019 AD.

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30 Apr 2019 19:59 #207014 by mlines
Replied by mlines on topic Andy's 2019 Blue SZ5
So close enough to be the same on the plate

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Martin

2003 M13 early KAP build.
3" Trailmaster lift with 1.5 Spacers on front
Customised winch bumper and roll cage
235/85R16 Maxxis Bighorns on 16" Rims, 4:1 Rocklobster, Rear ARB locker and on-board air
Corrected arms all-round, rear disks, Recaro seats and harnesses
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30 Apr 2019 20:01 #207015 by Andy2640
Replied by Andy2640 on topic Andy's 2019 Blue SZ5
Great, thank you.

A wise man once said...... When we are Mean, Shout at People, Lose our Tempers, Swear, and generally act like Tool Bags, Never forget ..... We are all Cavemen in Suits, Uniforms and/or Overalls ..... Living in Semi-Concrete Jungles. Andy - 2019 AD.

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30 Apr 2019 20:08 #207016 by Lambert
Replied by Lambert on topic Andy's 2019 Blue SZ5
On the vin plate it will give you the individual axle weight front and rear. On the side of the tyre it will have the maximum weight that the tyre can take at a maximum pressure. So using mathematics you know what they maximum weight that the axle will carry, divide that by the 2 tyres. You now know how much maximum weight each tyre is going to experience. So now with the information off the tyre you can work out how many psi the tyre needs to support 1 kg. Knowing that you can then multiply it by the half axle weight you worked out first. This will give you the correct psi for your tyres at maximum vehicle weight. It will be within 1 or 2 psi of the standard 26 psi all round. Simples.

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30 Apr 2019 22:52 - 30 Apr 2019 23:03 #207027 by GeorgeC
Replied by GeorgeC on topic Andy's 2019 Blue SZ5

mlines wrote: What does the tyre pressure plate inside the door say?



It says: Read me!

"Nobody expects The Spanish Inquisition."
www.aveoforum.com/forum/f118/seniors-jim...-suzuki-jimny-23477/
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Last edit: 30 Apr 2019 23:03 by GeorgeC.
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01 May 2019 05:31 #207032 by Andy2640
Replied by Andy2640 on topic Andy's 2019 Blue SZ5
Ive had some great advice here, and it is much appreciated, so feel free to scoff at my mathematical musings ;-)

Ok, but as we have stated before, the 215/75/15 has a 4.5% (approx) size difference. I'm assuming it also translates into a volume % too.

So wouldn't it stand that on top of 26 PSI we should add 4.5% ??

A wise man once said...... When we are Mean, Shout at People, Lose our Tempers, Swear, and generally act like Tool Bags, Never forget ..... We are all Cavemen in Suits, Uniforms and/or Overalls ..... Living in Semi-Concrete Jungles. Andy - 2019 AD.

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01 May 2019 06:15 #207038 by Lambert
Replied by Lambert on topic Andy's 2019 Blue SZ5
Volume and pressure are two different things. Yes a bigger tyre holds more air than a smaller one but that just means you have to have more air to achieve the same pressure. The same amount of air in a smaller space will be under more pressure but by releasing some of the air you can regulate the pressure. If that makes sense.

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01 May 2019 06:21 #207040 by Lambert
Replied by Lambert on topic Andy's 2019 Blue SZ5

Lambert wrote: Volume and pressure are two different things. Yes a bigger tyre holds more air than a smaller one but that just means you have to have more air to achieve the same pressure. The same amount of air in a smaller space will be under more pressure but by releasing some of the air you can regulate the pressure. If that makes sense.


The volume of a tyre is consistent regardless of the volume of air you put into it. What changes is the pressure of the air as you introduce more volume of air into the fixed volume of the tyre.

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01 May 2019 06:31 #207041 by GeorgeC
Replied by GeorgeC on topic Andy's 2019 Blue SZ5

Andy2640 wrote: I've had some great advice here and it is much appreciated so feel free to scoff at my mathematical musings ;-) Ok, but as we have stated before, the 215/75/15 has a 4.5% (approx) size difference. I'm assuming it also translates into a volume % too. So wouldn't it stand that on top of 26 PSI we should add 4.5% ??

NO! For a bigger tyre and the same weight vehicle, subtract your 4.5% that then equals 24.83PSI, seems about right to me!

"Nobody expects The Spanish Inquisition."
www.aveoforum.com/forum/f118/seniors-jim...-suzuki-jimny-23477/

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