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BigJimnyMeet (North) 2024 (12 Jan 2024)


BigJimnyMeet 2024

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Re:Tyre pressure for road use - Gen4 rims with BFG AT 215x75Rx15

  • johnnyev
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09 Sep 2019 05:22 #213313 by johnnyev
Anybody running BF Goodrich 215x75xR15 tyres on the original Gen4 rims (5.5 inch)? I'm experimenting with what pressure to run my tyres on here in Oman (hot tarmac) and would welcome suggestions.

Also wondering if there's any fouling issue fitting 7" steel rims?

Thanks
John

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  • Lambert
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09 Sep 2019 05:33 #213315 by Lambert
With a bigger heavier constructed tyre like the bfg you don't really want any more than the factory 26psi. It is possible to work out the pressure for a given load from the maximum inflation information on the sidewall of the tyre in conjunction with the axle weights on the vin tag. But broadly speaking something like 23 or 24 psi will be about right. Does yours have the tpms system because it will need recalibratiing if you do run below factory pressure.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
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09 Sep 2019 18:08 #213339 by wjamieson
"Does yours have the tpms system because it will need recalibratiing if you do run below factory pressure. "

Do you know how to recalibrate? I'm running 215/75/15 and reckon the correct pressure unladen would be 25psi. However that is right on the edge for the threshold which I believe is 25psi. Especially when colder the warning light comes on. So currently running at 26psi however still in a cold morning the warning light is on. I would like to change the threshold if possible to 21. Can you?

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  • CC Baxter
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09 Sep 2019 18:23 #213340 by CC Baxter
In the dash display menu under the TPMS heading there is a comfort setting. You could try that.
Chris

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09 Sep 2019 18:24 #213341 by Lambert
Not personally but I believe can be done by a dealer. I'm sure someone who has a gen4 will be able to offer edification.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
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10 Sep 2019 06:33 #213343 by mlines
Question submitted to Suzuki technical support on resetting TPMS threshold and also multiple wheel set configurations swapping (summer/winter tyres).

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: stiffsteve204me, CC Baxter

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10 Sep 2019 07:26 #213345 by CC Baxter
Well done Martin, I fiddled about with the dash menu and nothing works there
Chris

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  • G-imny
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10 Sep 2019 08:13 #213346 by G-imny
I can confirm what CC Baxter says, I tried running my BFGs at 23 psi until I got fed up with the TPMS warning taking over the centre display.

No amount of trying the reset the TPMS settings through the dashboard menus would allow it to run at lower pressure. In essence there is a default minimum value that a user cannot reset but a dealer might be able to.

I look forward to Suzuki’s response to Martins query.

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  • CC Baxter
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10 Sep 2019 09:50 #213347 by CC Baxter
This is another difficulty with TPMS that leaves me singing the praises of emulators.
Once upon a time we were all taught to check our tyres daily, a (granted) small number of people will now see no need for a visual check instead relying on a dash light. I appreciate we are stuck with these devices but I don't find myself enamoured with them.
Chris

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10 Sep 2019 12:04 #213349 by Lambert
It's like the rest of the new era driver aids, they are not to help driving but to cover manufacturers and insurance companies from being sued.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
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