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What Tyre Pressure Do You Run?


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#1 AndiDote

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Posted 25 June 2014 - 08:33 PM

Hey. I'm currently respraying my wheels and just thought what my tyre pressure it should be pumped to. There is no tyre pressure plate in the door jamb. So i was wondering what pressure is best.

 

I have pumped up one tyre so far to 32 PSI but looks a bit flat to me (at front), and one back tyre to 32 PSI. Maybe 34 PSI at front and 32 PSI at rear?

 

What do you run?

 

Oh my tyre size is 205/55 R16 



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#2 dezwez

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Posted 25 June 2014 - 08:38 PM

32 psi seem ok at that :)

same size as yours



#3 martyntdci

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Posted 25 June 2014 - 08:42 PM

225/40/18, run 34 all round........ 2008 tdci focus



#4 jmurray01

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Posted 25 June 2014 - 09:18 PM

The recommended tyre pressure for our vehicle, a 2000 Ford Focus 1.8 LX Hatchback running 185/65 R14 tyres is 32PSI front and back but I always inflate them to 35PSI.  In saying that though, by 35PSI I mean 35PSI on the tyre inflator at the fuel station, so considering the car has been driven over 10 miles to get there the tyres are probably at least 3PSI higher due to the heat, therefore making the "cold" tyre pressure around 32PSI which is correct.



#5 AndiDote

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Posted 25 June 2014 - 09:22 PM

Ah. I pumped mine up while hot. Maybe I will pump to 35 psi also and see how that goes. Finished spraying my 3rd wheel today so will do it tomorrow.

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#6 martyntdci

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Posted 25 June 2014 - 09:35 PM

1st your car has different size tyres on it, than when it was new.... the only 205/55/16 i can find is off a focus 2006 onward

 

yours should have 185/65/15 which state at 32 all round

 

205/55/16  should have 30 in the front, and 33 in the rear...........  for petrol

205/55/16 should have  33 al round if its a diesel....

 

hope this helps



#7 AndiDote

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Posted 25 June 2014 - 11:08 PM

1st your car has different size tyres on it, than when it was new.... the only 205/55/16 i can find is off a focus 2006 onward
 
yours should have 185/65/15 which state at 32 all round
 
205/55/16  should have 30 in the front, and 33 in the rear...........  for petrol
205/55/16 should have  33 al round if its a diesel....
 
hope this helps


Thanks mate. That helps a lot. Wonder why the previous owner changed the wheel size? 30 at front and 33 at rear? Shouldn't it be the other way round?

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#8 sonic113

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Posted 26 June 2014 - 11:36 AM

on mk2 focus with 205/55/16 i run front 2.1 bar / rear 2.3 bar. something like front 31 psi rear 33 psi



#9 williamweb

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Posted 26 June 2014 - 12:05 PM

32 psi all round 195/60/R15.



#10 artscot79

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Posted 26 June 2014 - 12:16 PM

the correct pressures from my door plate 33 rear when cold 31 at the front you dont need anymore than that



#11 FOCA

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Posted 27 June 2014 - 01:10 AM

I run 39 in the front and 41 at the back,(mk3 mondeo lightened, souped up) on previous cars i always ran 35-36psi, and could feel the difference in grip if the pressures were lower for any reason, i remember thinking  i had damaged suspension because my car was sliding about so much after a 150mile lock-side run (along the Great Glen) - it turned out the garage that had just MOTd the car dropped the pressures (probably for the rollers) - after i put the pressures up the car was back up to its normal (great handling, lots of grip) self - it was autumn and the road was slippery with damp patches under the trees, the higher pressures helped get heat into the tyres (that was on my mk2 )

 

On the mk3 i put the fronts at 39PSI, and the rears at 41, with the weight of the engine and the torque going through the front wheels, the front tyres warm up faster and get warmer/ stay warmer han the rears, as they heat up the air expands and the pressures get higher, the warmer they get, the higher the pressure 39 is the cold pressure, this often  rises about 3psi to 42PSI, the rears do not have as much weight on them, and do not have all thay torque going through them, so do not heat up hardly at all (or much slower) so it takes ages for the pressure to build up, it often does not go much above 41PSI even though starting with such a high pressure helps to warm the rears up more

 

The disadvantages of running such a high pressure are, you get a harsher ride, and you may wear out the middle part of your tyre faster than the "shoulders" especially if you drive a lot on M-ways, and not drive hard on twisty roads - i have read that very high pressures can put shock loads through the suspension, but so can low pressures if the rim is hit hard

 

The advantages of higher pressures are - less rolling resistance, so better MPG, and often even a higher top speed! (yes, really) better grip in cold/ wet conditions, less drag on the front  wheels when parking (so the steering wheel is easier to turn, and/ or it puts less stress on the power steering/ components) - the steering / handling has a more "direct" feel, and the car is more responsive (eg, turn in, s-bends etc) the higher pressures help support the tyres sidewall, so the tyre maintains its shape better during very hard cornering, or in some emergency situations - if you corner hard you are less liable to wear out your outside front shoulder tread so quickly - your rims are protected better from pot-holes, kerbs etc

 

It depends on the car, tyre, drivers preference, load in the car, driving style - tyre pressures are only a guide, and only "recomended" and there may be one (low) set of pressures for "normal" driving (read, popping down to the shops) and another higher set of tyre pressures "high speed / heavily laden" (that would be for me, then)  :lol:

 

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#12 AndiDote

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Posted 27 June 2014 - 02:57 AM

I run 39 in the front and 41 at the back,(mk3 mondeo lightened, souped up) on previous cars i always ran 35-36psi, and could feel the difference in grip if the pressures were lower for any reason, i remember thinking  i had damaged suspension because my car was sliding about so much after a 150mile lock-side run (along the Great Glen) - it turned out the garage that had just MOTd the car dropped the pressures (probably for the rollers) - after i put the pressures up the car was back up to its normal (great handling, lots of grip) self - it was autumn and the road was slippery with damp patches under the trees, the higher pressures helped get heat into the tyres (that was on my mk2 )......
 
Remember "recommended"        

WoW great information. Thanks

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#13 shaunytee1600

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Posted 27 June 2014 - 11:57 AM

I use the same as you with the same tyre size.


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#14 AndiDote

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Posted 27 June 2014 - 01:22 PM

I use the same as you with the same tyre size.


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what 32 PSI all round? Think I'll just stick with that then.

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#15 artscot79

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Posted 27 June 2014 - 02:55 PM

over inflating is dangerous for one it will increase the risk of a blown tyre and the tyre will not grip properly on the road very hazardous in the wet it will also increase braking

at 32 front 33 rear thats with 3 adults each weighing 12 stone since its mainly only me i sit at 30 front 31 rear which gives me the best balance of extra grip in dry and wet



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