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BigJimnyMeet (North) 2024 (12 Jan 2024)
BigJimnyMeet 2024
14th July 2024
Parkwood Nr. Leeds
14th July 2024
Parkwood Nr. Leeds
Booking now open - Discount for additional vehicles
Click HERE for details
Click HERE for details
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Re:Andy's 2019 Blue SZ5
30 Apr 2019 19:51 #207012
by mlines
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
Replied by mlines on topic Andy's 2019 Blue SZ5
But the new ones are pretty much the same size?
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Sent from my Pixel 2 XL using Tapatalk
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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- Andy2640
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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
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30 Apr 2019 19:59 #207014
by mlines
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
Replied by mlines on topic Andy's 2019 Blue SZ5
So close enough to be the same on the plate
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Sent from my Pixel 2 XL using Tapatalk
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
The following user(s) said Thank You: Andy2640
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- Andy2640
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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.
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30 Apr 2019 20:08 #207016
by Lambert
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
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.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
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01 May 2019 05:31 #207032
by Andy2640
Replied by Andy2640 on topic Re: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% ??
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% ??
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01 May 2019 06:15 #207038
by Lambert
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
Replied by Lambert on topic Re: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.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
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01 May 2019 06:21 #207040
by Lambert
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.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
Replied by Lambert on topic Re: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.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
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01 May 2019 06:43 #207042
by Lambert
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
Replied by Lambert on topic Re:Andy's 2019 Blue SZ5
Except that that doesn't take into account the potential differences in tyre construction which affect the ability to carry weight at different pressures. Hence working it out from the specific information off the side of the tyre.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
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01 May 2019 07:19 - 01 May 2019 07:22 #207046
by Andy2640
I think I get this now.
Its like this > (I THINK) If we had two rubber cubes (both rated at 30psi) The first is 1m by 1m. And we also have the other rubber cube 2m by 2m. Whilst the 2 by 2 would require more air (volume), they would both need to be under pressure of 30PSI.??
That melted my brain.
Replied by Andy2640 on topic Re:Andy's 2019 Blue SZ5
Lambert wrote: Except that that doesn't take into account the potential differences in tyre construction which affect the ability to carry weight at different pressures. Hence working it out from the specific information off the side of the tyre.
I think I get this now.
Its like this > (I THINK) If we had two rubber cubes (both rated at 30psi) The first is 1m by 1m. And we also have the other rubber cube 2m by 2m. Whilst the 2 by 2 would require more air (volume), they would both need to be under pressure of 30PSI.??
That melted my brain.
Last edit: 01 May 2019 07:22 by Andy2640.
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01 May 2019 07:31 #207047
by Lambert
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
Replied by Lambert on topic Re:Andy's 2019 Blue SZ5
Essentially yes.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
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01 May 2019 07:32 #207048
by Lambert
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
Replied by Lambert on topic Re:Andy's 2019 Blue SZ5
Think of it like this....
Because, science.
Because, science.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
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