I've just purchased this vehicle a week ago. The Owners Manual for the Fiat lists the tyre pressures at 5.5bar (approx 80psi). That seems very high, but I'm new to this type of vehicle. I did online and confirmed that pressure.
Now, the only problem is that all of my local servo's have those pumps that switch off at a set pressure, and the maximum you can set them to is 60psi. Ho hum, I didn't have any choice but to use that pressure, and I've just driven from Perth to Broome without incident.
However, assuming the tyres should be set at 5.5bar (80psi) where do people go to inflate (or do you carry your own pump)?
Thanks,
Jaahn said
06:42 PM Jun 20, 2020
Hi
Try using the truck servos for higher tire pressures. Sometimes the diesel is a tad cheaper too. Just be careful with the big nozzles as they can be very fast delivery at full opening.
Jaahn
Steel Dog said
07:55 PM Jun 20, 2020
Hi jrk36,
The BP sevos on the hi-ways usually have the hi-pressure compressors, just look for the compressor it's in like a container beside the carpark area and you have to go in to the service counter and ask for the hose, leaving your Licence for security, the fittings to connect the hose are on the columns near the fuel pumps.
I usually pump mine up to 85 psi and then use my own gauge to deflate them to 80 psi.
You will notice that the tyres are very robust and specific for Motorhomes.
As for fuel fill up, mine only has the small hole for filling, so no hi-flow.
Happy travels and enjoy your MH.
Cheers
Steel Dog
Whenarewethere said
10:01 PM Jun 20, 2020
There should be a sticker on the passenger or driver door frame with tyre pressure.
My 3 ARB compressors will inflate a 60L volume tyre from 20psi to 35psi in 30 seconds, but the more you increase the pressure the slower the tyre will inflate.
My setup cuts off at 90psi so there is no worthwhile headroom for your 85psi. You will need a compressor which goes to about 120psi.
All the cheap air compressors say they can go to a high psi, say 150, but this is for zero air flow, & they also say a high volume but this is for zero pressure, well actually 1 atmosphere! Always remove the volume of the first atmosphere of pressure as it is in effect 0 volume for any calculations.
What should be stated is SCFM (standard cubic feet per minute). CFM or LPM is a meaningless statement, it needs an S in front, but none of the car compressors state an S. As a rough guide knock off about 1% efficiency for every metre of hose, connector & power lead. It is best to run the engine while using the compressor as 1 compesscom will draw about 25 to 30 amps.
It would be a good idea to install a moisture trap especially if you are in humid environments. If compressing the air to 5.5 bar, but the compressor will be a bit higher, you will be putting at least 5.5 time the water that is in 1 atmosphere into the tyre, & the water just keeps accumulating (unless you drill a hole in the bottom & let it out!).
You also need a compressor with at least a 50% duty cycle. They get dangerously hot.
I've just purchased this vehicle a week ago. The Owners Manual for the Fiat lists the tyre pressures at 5.5bar (approx 80psi). That seems very high, but I'm new to this type of vehicle. I did online and confirmed that pressure.
Now, the only problem is that all of my local servo's have those pumps that switch off at a set pressure, and the maximum you can set them to is 60psi. Ho hum, I didn't have any choice but to use that pressure, and I've just driven from Perth to Broome without incident.
However, assuming the tyres should be set at 5.5bar (80psi) where do people go to inflate (or do you carry your own pump)?
Thanks,
Hi jrk36
The Owners Manual for the Fiat lists the tyre pressures at 5.5bar (approx 80psi)
The tyre pressure in the owners manual, as well as the sticker on/in the vehicle, are for the tyres that were originally fitted, so you have to look at the markings on the tyres you are using, to find out the pressures
For example my 2006 Jayco Conquest was originally fitted with Michelin 215 75R 16 Camping Tyres, which are not available in Australia
My owners manual, and sticker also says 80 PSI, which were for those original specific tyres
But the nearest tyres I could buy were Michelin Agilis 215 75R 16 Light Truck tyres, this tyre had a maximum pressure of 65 PSI
I then fitted Michelin Agilis 225 75R 16 Light Truck tyres, as they fitted the same steel rims, and are one size larger, for more stability, and for the speedo to be closer to real speed These tyres are 80 PSI maximum pressure, which is just coincidently the same pressure, as the owners manual/sticker
where do people go to inflate (or do you carry your own pump)?
I carry a 4X4 type 12 volt compressor, from Supercheap (from memory), and have only ever used it to help others out, while on the road, (it does go up to 80 PSI)
I also carry a tubeless plug tyre repair kit, just in case I pick up 2 nails/screws, on the same section of road
My research, (err surfing the net), made me aware that normal valve stems on tubeless tyre rims, are only good for 65 PSI, so I carry some which (look the same but longer), are good for 100 PSI My steel rims, still have the original valve stems, which look similar to the ones I see on mag rims
Radar said
08:07 AM Jun 21, 2020
jrk36 wrote:
I've just purchased this vehicle a week ago. The Owners Manual for the Fiat lists the tyre pressures at 5.5bar (approx 80psi). That seems very high, but I'm new to this type of vehicle. I did online and confirmed that pressure.
Now, the only problem is that all of my local servo's have those pumps that switch off at a set pressure, and the maximum you can set them to is 60psi. Ho hum, I didn't have any choice but to use that pressure, and I've just driven from Perth to Broome without incident.
However, assuming the tyres should be set at 5.5bar (80psi) where do people go to inflate (or do you carry your own pump)?
Thanks,
In the drivers manual of your Fiat (in the glove box) you will find a page on tyres and recommended air pressures but me I take it down to the beach, let all the air out and replace with fresh sea air to what the plate on the drivers door reads to be sure.
I've just purchased this vehicle a week ago. The Owners Manual for the Fiat lists the tyre pressures at 5.5bar (approx 80psi). That seems very high, but I'm new to this type of vehicle. I did online and confirmed that pressure.
Now, the only problem is that all of my local servo's have those pumps that switch off at a set pressure, and the maximum you can set them to is 60psi. Ho hum, I didn't have any choice but to use that pressure, and I've just driven from Perth to Broome without incident.
However, assuming the tyres should be set at 5.5bar (80psi) where do people go to inflate (or do you carry your own pump)?
Thanks,
Hi
Try using the truck servos for higher tire pressures. Sometimes the diesel is a tad cheaper too.
Just be careful with the big nozzles as they can be very fast delivery at full opening.
Jaahn
The BP sevos on the hi-ways usually have the hi-pressure compressors, just look for the compressor it's in like a container beside the carpark area and you have to go in to the service counter and ask for the hose, leaving your Licence for security, the fittings to connect the hose are on the columns near the fuel pumps.
I usually pump mine up to 85 psi and then use my own gauge to deflate them to 80 psi.
You will notice that the tyres are very robust and specific for Motorhomes.
As for fuel fill up, mine only has the small hole for filling, so no hi-flow.
Happy travels and enjoy your MH.
Cheers
Steel Dog
There should be a sticker on the passenger or driver door frame with tyre pressure.
My 3 ARB compressors will inflate a 60L volume tyre from 20psi to 35psi in 30 seconds, but the more you increase the pressure the slower the tyre will inflate.
My setup cuts off at 90psi so there is no worthwhile headroom for your 85psi. You will need a compressor which goes to about 120psi.
All the cheap air compressors say they can go to a high psi, say 150, but this is for zero air flow, & they also say a high volume but this is for zero pressure, well actually 1 atmosphere! Always remove the volume of the first atmosphere of pressure as it is in effect 0 volume for any calculations.
What should be stated is SCFM (standard cubic feet per minute). CFM or LPM is a meaningless statement, it needs an S in front, but none of the car compressors state an S. As a rough guide knock off about 1% efficiency for every metre of hose, connector & power lead. It is best to run the engine while using the compressor as 1 compesscom will draw about 25 to 30 amps.
It would be a good idea to install a moisture trap especially if you are in humid environments. If compressing the air to 5.5 bar, but the compressor will be a bit higher, you will be putting at least 5.5 time the water that is in 1 atmosphere into the tyre, & the water just keeps accumulating (unless you drill a hole in the bottom & let it out!).
You also need a compressor with at least a 50% duty cycle. They get dangerously hot.
Hi jrk36
The tyre pressure in the owners manual, as well as the sticker on/in the vehicle, are for the tyres that were originally fitted, so you have to look at the markings on the tyres you are using, to find out the pressures
For example my 2006 Jayco Conquest was originally fitted with Michelin 215 75R 16 Camping Tyres, which are not available in Australia
My owners manual, and sticker also says 80 PSI, which were for those original specific tyres
But the nearest tyres I could buy were Michelin Agilis 215 75R 16 Light Truck tyres, this tyre had a maximum pressure of 65 PSI
I then fitted Michelin Agilis 225 75R 16 Light Truck tyres, as they fitted the same steel rims, and are one size larger, for more stability, and for the speedo to be closer to real speed
These tyres are 80 PSI maximum pressure, which is just coincidently the same pressure, as the owners manual/sticker
I carry a 4X4 type 12 volt compressor, from Supercheap (from memory), and have only ever used it to help others out, while on the road, (it does go up to 80 PSI)
I also carry a tubeless plug tyre repair kit, just in case I pick up 2 nails/screws, on the same section of road
My research, (err surfing the net), made me aware that normal valve stems on tubeless tyre rims, are only good for 65 PSI, so I carry some which (look the same but longer), are good for 100 PSI
My steel rims, still have the original valve stems, which look similar to the ones I see on mag rims
In the drivers manual of your Fiat (in the glove box) you will find a page on tyres and recommended air pressures but me I take it down to the beach, let all the air out and replace with fresh sea air to what the plate on the drivers door reads to be sure.