Tyre pressures for a 175/65R14 tyre - Motorcycles

The maximum pressure will depend on the ply rating of the tyre and the working pressure will depend on the application.

A 4 ply tyre has a maximum pressure of around 32 psi and an 8 ply tyre about 65 psi. For many years this essential safety information has been moulded into the sidewalls.

1. The tyre has to be removed to fit the tyre valve/ sensor unit to the wheel. . Tyre dealers will do this for you when you supply the sensor.

2. Any renault dealer parts department can sell you a new sensor.

3. The new sensor has to be programmed to the car's tyre pressure monitoring system (TPMS).

3. Here is a list of information about the Renault Laguna tyre pressure sensors to assist you. The 2nd link below shows a picture of the tyre valve/sensor unit that fits to your wheel.

http://www.petercoopercarrepairs.co.uk/renault_laguna_mkii.htm

Renault Laguna Megane Tyre Pressure Sensor World Car Parts Store

I can calculate it with spreadsheet I made, call myself tyre-pressure specialist nowadays.
Depends on tyres maximum load and Pressure needed for that ( AT pressure 6pr 55psi/3.8 bar, 8pr 65psi/4.5bar or 69/70psi/4.75/4.8bar). and maximum speed of tyre given as letter mostly N to R for caravans.

Then from Caravan MPVW ( max permissable Vehicle Weight).
Or better real weight ( overloading is more rule then exeption and unequall load is possible.

But normal car tyres or XL/reinforced/Extraload are sometimes OK if they have enaugh maximum load for MPVW.
Will try to make picture of example.

you should be running 8 ply tyres on the vehicle to carry the maximum load as required by the regulator
The recommended tyre pressure will be on a decal attached to the drivers door ( probably on the door frame under the latch)
Having said all that I recommend 45 psi for the rear and 40 for the front
If you run any less ,the ride will be smoother but if you load the vehicle, the rear tyres are under inflated and prone to failure from overheating
tyres are manufactured to run at a certain pressure due to the construction of the case. Talk to a tyre shop as to the pressure you should be using for the tyres.

Depends also on the kind of tyre.
For the maximum load of tyre nex kinds need next pressure , wich is called AT-pressure/maxloadpressure/reference-pressure , for up to maximum speed of tyre or if lower 160km/99m/h. This is not the maximum pressure of tyre.

Normal car tyre /standardload AT 2.5bar/36psi ( exeptions as low as 2.2)
XL/Reinforced/Extraload AT 2.9bar/42psi ( exeptions 2.8 and 3.0)
6PR( plyrating) /C-load AT 3.8bar/55psi EUR ( USA 50psi/3.4bar)
8PR/D-load AT 4.5/4.8 bar/ 65/69/70 psi
From E -load is not often used in Europe.

From this AT pressure you can calculate the needed pressure for lower loads . Made spreadsheet for it in wich I first add 10% to the assumed load before calculating.
Will give example picture

The required tyre pressure is established by the amount of load or weight that the tyre is carrying. Over or under inflation can cause excessive tire tread wear. The recommended pressures for your tyres are shown in raised lettering on the sidewall of the tyres.
Depending on what you are towing, you will know how much additional weight is being placed on the cars rear tyres, and you can adjust the pressure accordingly.
Personally, When I am towing, I increase the tire pressures by about 5 psi just to reduce sidewall flexing and create a more stable towing package.
Hope this helps.

2002 VW Polo 1.4

Tyre: 165/70 R14
- Front tyre pressure: 2,2 ... 2,4 bar
- Rear tyre pressure: 2,0 ... 2,6 bar
- Spare tyre pressure: 4,2 bar

Yup nice question. For any vehicle accurate tyre pressure will give you better tyre life, low running cost, etc. Here is a chart for car tyres click here.
For bikes i havent found any chart. basically in india rear tyres having 100/90 18inch maximum tyre pressure is 32psi. front tyre having 2.75P or 80/90 18 inch uses 24 psi pressure. and do check your tyre pressure twice a month.

DEPENDING ON TYPE OF TYRES IT SHOULD BE 2.2BAR LOOK ON THE TYRE PRESSURE IS PRINTED ON THE TYRE