Tyre Pressures

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Aharon

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Hi Everyone,

Well, I have a Renault Sandero and the specs state to pump the tyres to 2-bar all round.

However, I have just put on new Michelin 15" tyres and rims and TWT recommended that either I pump 2.2-bar all round or 2.2 bar in front and 2-bar at the back.

What is best for fuel consumption and to preserve the tyres?

Thanks
Regards
 
Did you change the tyre size?
If not go with TWT recommended.
Harder tyres are better for consumption.
 
Haldex said:
Did you change the tyre size?
If not go with TWT recommended.
Harder tyres are better for consumption.
Click to expand...

Ye, I changed from the stock 14" to 15" - so you reckon I should go with them?
 
To little pressure and you will be running on the sidewalls, so I think 2.2 will be more than sufficient for 15's.
 
Theoretically you will get higher fuel milage with higher pressures due to the smaller contact patch= less friction. Ive got 16s. Pump them to 2.2 bar.
 
Problem with pumping them harder is that some garages now charge you for it. I asked why and they said it's because of inflation.
 
320d. Higher pressures do have drawbacks like a stiffer ride,possible loss of cornering and braking performance and your tires will be more vulnerable to pothole damage if you live in a place with k@k roads. But @ 2.2 from 2 there will barely be a difference.
 
Klipdrif said:
320d. Higher pressures do have drawbacks like a stiffer ride,possible loss of cornering and braking performance and your tires will be more vulnerable to pothole damage if you live in a place with k@k roads
Click to expand...
I can't agree with you on this.

Higher tyre pressure (within reason of course) will improve cornering, and reduce pothole damage risk. It will also improve fuel consumption figures slightly (less rolling resistance at higher pressures).

An increase in pressure from 2, to 2.2, bar will have zero negative impact at all. Only benefits, albeit very slight, and probably not able to be measured accurately.
 
GreGorGy said:
Problem with pumping them harder is that some garages now charge you for it. I asked why and they said it's because of inflation.
Click to expand...

Nice one! In England you have to put in a £1 coin to activate the tyre pressure pump. Usually you specify the pressure you want on a keypad and just apply the nozzle to the valve. But its not free like here
 
TWT recommends 2.3bar for me, the petrol cap says 2.7bar with small load, so I fill 2.5bar nitrogen.
Harder ride, but I dont mind, fuel is benefit, less stress on the steering, better acceleration...
 
Haldex said:
TWT recommends 2.3bar for me, the petrol cap says 2.7bar with small load, so I fill 2.5bar nitrogen.
Harder ride, but I dont mind, fuel is benefit, less stress on the steering, better acceleration...
Click to expand...
What vehicle with 2.7 bar??
 
Mine is 2.8. Will check with TWT to see if that is right.

I do have excessive wear on the outside but I put it down to excessive cornering.
 
This thread made me bump my pressure on all tyres from 2.2, to 2.4. It's a bit bumpy now but conering feels better (maybe it's just in my mind :D)
 
If you can actually notice the difference .2bar has on your ride, I'd be impressed. Most of the gauges at petrol stations are so dodgy in any case, probably only accurate to about .2 bar in any case.

If TWT put new tyres on and recommended 2.2bar, go for it.

Just out of interest, we rented a Kombi the other day, and recommended tyre pressure on those tyres is up to 3.5bar on certain tyre choices.
 
It's generally better to err on the higher pressure side rather than the lower side...
 
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