Correct Tyre Pressures

[Kaizer Sozay]

I have maintaned a constant of 28 PSI, but i keep filing at various pumps, can any one recomend a good as well as economical air pressure gauge.

[msprabhakar]

According to Oscar Pereda, an engineer for BFGoodrich, a thumb rule and a realistic starting point is:

(Vehicle Weight in lb/100) + 2 psi at heavier end + 2 psi all around if suspension and alignment are stock.

Oscar also adds that there is no 'golden' tyre pressure. The optimal setting depends on the individual driver's preferences. For those inclined to find the ultimate setup, he recommends detailed tests, see http://www.sportcompactcarweb.com/tech/0208scc_tires/ for details.

[speedsatya]

Originally Posted by ajalphonso

Hi, I have a Zen 2002 model which came with tyres 145/80 R 12 71 S, the recomended tyre pressure for these tyres was 24 psi. I have installed Michelin tubeless tyre 155/70 R13 75 H..

as the zen comes with 145/80r12...155/70r13 is not the right upsize ...
155/65r13 is the correct upsize.

maruti says 24psi for 145/80r12...but 26 psi give a better feel.

about 145/70r13 ,maruti says 30 psi ...but that gives a bumpy ride when the car is not fully loaded...28 psi shud be ok ..and mabbe 30 psi on the highways.

Originally Posted by 5u3zEr0

Even I had Michelin Certis tubeless tyres 165/65 R13 on traxx rims on my ex-zen and I used to keep the tyre pressure at 28psi for city driving and 30 psi for the highways. With these tyre pessures I used to get 12kmpl in the city and 15/16 kmpl on the highways with the a/c on all the time.

165/65r13 is also not the correct upsize keeping the OD in mind...its 165/60r13 thats the right one...and the max that u can fit is a 5j rim...anything wider and your tire will touch the body ...

with 165/60 r13, 30psi for city and 32 for highway with 4 on board gives good grip and FE.

if u getting 12 kpl with 165/65 r13 ...then your actual FE was better than this, as the tire that you were using had higher OD than the tire with stock OD.

it is advisable to keep 2-3 psi more on the highways if high speed driving will be done.

[nitrous]

I use 155/80/R13 tyres. My pressures vary from 27 to 31 depending upon the conditions i drive. If its going to be a slow,city ride. I would fill something around 27or 28. And when i'm gonna burn rubber on the highways, its 30 to 31 depending upon the laden weight.

This should help u decide to calculate ur tyre pressures.

[5u3zEr0]

Originally Posted by speedsatya

165/65r13 is also not the correct upsize keeping the OD in mind...its 165/60r13 thats the right one...and the max that u can fit is a 5j rim...anything wider and your tire will touch the body ...

with 165/60 r13, 30psi for city and 32 for highway with 4 on board gives good grip and FE.

if u getting 12 kpl with 165/65 r13 ...then your actual FE was better than this, as the tire that you were using had higher OD than the tire with stock OD.

165/65 r13 could be wrong but the tyre dealer didnt have 165/60 r13 and I was upsizing from 145/70 r13. FE Didnt go down after I upsized the tyres. Was getting around 12 before and after upsizing.

I had a 5j rim but still my tyre used to hit the body with someone in the rear. Had to tap the inside of the wheel arches to avoid touching.

[revtech]

my zen had a puncture today.A big nail had pierced its way through the tyre which had cut my tube.got it replaced.he told me if you fill pressure at 28 psi there is a greater risk of a nail piercing.is tjis true.if so how and why ??


rev

[ramkya1]

Hai BHPians,

During my recent 1300 KM trip on my Fusion, after about 600 KMS I felt something was out of wack and the car was handling funny. Checked the tyre pressures and it was way down low at Front 23 and back 32; the recommended pressures for tubeless Front is 35 for my load and 40 for Rear. I quickly filled it up to regulation pressures and things were back to normal. At the end of the journey the milages were also way down lower than usual. A few questions come to my mind:

1) Is there any clear ratio of tyre pressure and milage?
2) What kind of damage does the tyres take when you run them underinflated?
3) An underinflated tyre gives more cushny ride (more traction, more control?)

Some of the techies.... please clear the cobwebs.

Tnx ----- Ramky.

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[binoyjude]

Hey guys,

My car is Zen Estilo...Its done 2 yrs and 9600kms....TouchWood No punctures so far.....
What i fill is 32 psi on all 4 tyres..This is what is written in side of door sticker...Isnt it same on all tyres??
Any Advices??



Note from the Team-BHP Support Team : Please take the time to use proper punctuation as per Team-BHP rules. Avoid...typing...like...this. Thanks.

[binoyjude]

What's the correct Air pressure for Estilo?? I fill 32 in all tyres..is it different in back tyres? i think it written 32 in driver door side sticker..Please advice..Thanks

[Nikhilb2008]

Just fill what is recommended. You can then experiment with one or two PSI higher and lower and then find the perfect pressure for your usage.

[pamishra]

Can anyone please me what is the recommeded tyre pressure for Goodyear tubeless 175/65R14?

[Jai3033]

What are the correct tyre pressures for Skoda Octavia and Toyota Innova? Both are stock tubeless tyres.

[Ravveendrra]

The correct tyre pressures for the Skoda Laura L&K running stock tyres (205/55 R 16s) is 31 in Front and 29 in rear.

Cheers

[pamishra]

Is there any difference in the tyre pressures for tubed and tubeless tyres i.e. in my tubed 175/65R14, the recommended presure is 30psi. I have upgraded it to 175/65R14 tubeless.

So will i have to keep the same pressure?

[prince_pervez]

Personally I feel 28 PSI (zen stock) on the highways creates too much of noise from the tyre. When I fill up to 30 the ride is much much quieter. In the city I keep 28.
I am mentioning this because no one has written anything about the racket the tires create @ 28 PSI. Has anyone noticed this ?