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tyre worn in middle only

inc spare tyres & tyre pressure

Post Fri Jul 13, 2012 2:03 pm
njdrabble Regular
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Hi

Just noticed that my front off side tyre is showing a lot more wear to the tread in the middle of the tyre as opposed to the outside edges. I am very careful with my tyre pressure so it's not caused by overinflation. Any ideas what could be causing this before I replace with a new (expensive) tyre.


Post Fri Jul 13, 2012 2:07 pm
Scott barton User avatar

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Over inflation is the usual cause.
I know you said you checked pressure. But what ate you putting in their?

Post Fri Jul 13, 2012 2:13 pm
njdrabble Regular
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She gets 2.4 in the front. Check them every 4-6 weeks, always when cold.

Post Tue May 21, 2013 9:47 pm
rcz_pete Newbie
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This may come a bit late but anyway:

tyre overinflated -> tyre wears out outside edges
tyre underinflated -> tyre wears out in the middle

When tyre is underinflated, tyre is too loose to keep its form when rotating fast. Centrifugal forces will get tyre deformed the way that center part of the tyre will move away from the center of rotation. Simple as that.

-pete-
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Post Wed May 22, 2013 7:41 am
donnaj1dlh User avatar

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I don't usually work in "new money" when it comes to tyre pressures .... I'm a PSI girl .... 34 all round
Celebrated the birth of a "bog standard" Amber Red 2.0 HDi GT RCZ............born on 01 Oct 11
.... staying faithful to the brand:
2011 RCZ HDi GT, Amber Red
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and then I went and bought a Volcanic Orange Mini Cooper S, born 14Jun14 ... 'kin meong.......

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Post Wed May 22, 2013 10:13 am
jactac User avatar

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Scott barton wrote:
Over inflation is the usual cause.
I know you said you checked pressure. But what are you putting in their?


Put air in is the best bet, you could try custard, but I recommend air :lol: :thumbup:
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Post Wed May 22, 2013 10:16 am
jactac User avatar

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rcz_pete wrote:
This may come a bit late but anyway:

tyre overinflated -> tyre wears out outside edges
tyre underinflated -> tyre wears out in the middle

When tyre is underinflated, tyre is too loose to keep its form when rotating fast. Centrifugal forces will get tyre deformed the way that center part of the tyre will move away from the center of rotation. Simple as that.

-pete-


I have to say , this is the first time I've heard of this, not saying it's incorrect but I've not heard this before.
Every time I've taken a tyre in to be replaced because of "centre" wear, the fitter has said over inflation :eusa-think:

Take a look at this guide.

www.procarcare.com/includes/content/res ... ewear.html
RCZ 156 GT
Opal White,
NG4 Sat Nav, Latest firmware/Maps/Speed cameras
Interior Sport Kit,
Onyx Black Solstice 19's,
Front RCZ Splitters
Phillips H7's Diamond Vision/Phillips X-treme vision
380/360 Led DLR's
Paint & Interior leather protection

Post Wed May 22, 2013 10:55 am
OO58RON User avatar

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jactac wrote:
Scott barton wrote:
Over inflation is the usual cause.
I know you said you checked pressure. But what are you putting in their?


Put air in is the best bet, you could try custard, but I recommend air :lol: :thumbup:

I prefer nitrogen to air as it give better results IMO
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Post Wed May 22, 2013 11:35 am
JWT User avatar

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OO58RON wrote:
jactac wrote:
Scott barton wrote:
Over inflation is the usual cause.
I know you said you checked pressure. But what are you putting in their?


Put air in is the best bet, you could try custard, but I recommend air :lol: :thumbup:

I prefer nitrogen to air as it give better results IMO


I fill mine up with a gas made of 78% nitrogen for free with unnoticeable differences.

Post Wed May 22, 2013 5:27 pm
mrizzle User avatar

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OO58RON wrote:
jactac wrote:
Scott barton wrote:
Over inflation is the usual cause.
I know you said you checked pressure. But what are you putting in their?


Put air in is the best bet, you could try custard, but I recommend air :lol: :thumbup:

I prefer nitrogen to air as it give better results IMO


Sorry RON but that's total nonsense. Maybe if you were driving an F1 car or flying aircraft. See the article below!!

http://www.theaa.com/motoring_advice/sa ... rogen.html
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The replacement; Summit White Astra (J) GTC VXR

Post Wed May 22, 2013 5:40 pm
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They put nitrogen in the tyres on a tv show and the car actually handled cornered and braked worse on nitrogen than standard air so smoke on that when air free
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Post Wed May 22, 2013 7:29 pm
MaX83 User avatar

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bigmac3161 wrote:
They put nitrogen in the tyres on a tv show and the car actually handled cornered and braked worse on nitrogen than standard air so smoke on that when air free


I heard about that test, 5th gear i think... cant comment though as i've never used nitrogen in my tires before.
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Ex: 2013 Peugeot RCZ THP 200
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Post Wed May 22, 2013 7:32 pm
OO58RON User avatar

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I will not return to inflating my tyres with air again. I like and believe from experience the benefits of nitrogen.
RCZ is the only car to make the Audi TT appear dated, and is officially the sexiest car on the road.

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Post Wed May 22, 2013 7:57 pm
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OO58RON wrote:
I will not return to inflating my tyres with air again. I like and believe from experience the benefits of nitrogen.

I'm interested to hear what difference you experienced. Air is 70% nitrogen already and I don't know what to expect from replacing the remaining 30% with more nitrogen. Handling? Pressure stability regardless of external temperature? I know I could Google it but I'm on holiday and 3 Three's 3g coverage is woeful here in the lakes!

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Post Wed May 22, 2013 8:03 pm
mrizzle User avatar

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stevebasshead wrote:
OO58RON wrote:
I will not return to inflating my tyres with air again. I like and believe from experience the benefits of nitrogen.

I'm interested to hear what difference you experienced. Air is 70% nitrogen already and I don't know what to expect from replacing the remaining 30% with more nitrogen. Handling? Pressure stability regardless of external temperature? I know I could Google it but I'm on holiday and 3 Three's 3g coverage is woeful here in the lakes!

Sent from my mind to yours via Tapatalk 2


Well here's the article I linked to in full steve.

Nitrogen inflation

For specialist applications only

 You might be aware that purified nitrogen has been used to inflate tyres on aircraft and racing cars for many years but does it really make sense for ordinary car and van tyres?The air we breath (and the normal compressed air used to inflate tyres) contains 78% Nitrogen, 21% Oxygen and 1% other gases but some tyre specialists are now offering - at a premium - to inflate tyres with pure nitrogen.

Nitrogen for aircraft and F1 tyres

Planes fly at heights where temperatures may be as low as -40C. Moisture in the tyres can freeze causing vibration and balance problems when landing. Pure nitrogen is dry so eliminates this problem. Using dried compressed air could achieve the same thing.In motor sport, the elimination of moisture in tyres through the use of pure nitrogen (or dried compressed air) can help reduce tyre temperature when operating in extreme conditions, close to maximum load/speed.

Nitrogen in car tyres

For passenger car tyres the main claims seem to be:
Less corrosion – because unlike air there's no moisture in pure nitrogen
Slower rate of pressure loss – nitrogen molecules are larger than oxygen molecules (which make up 21% of compressed air)

Air loss can occur through the inner liner of the tyre as well through the valve, punctures, or failure of the seal between tyre and wheel rim. Pure nitrogen might leak more slowly through the liner, but you would still have to check tyre condition and pressure regularly.Corrosion of the tyre from using normal compressed air is unlikely anyway because only the outer tread band of a car tyre contains steel – the amount of moisture reaching it from the inside is minimal.

To change to nitrogen you have to have the air already in the tyres removed before the tyres are re-inflated with purified compressed nitrogen. There will be a one-off charge per tyre but once filled with nitrogen, future top-ups would have to be with nitrogen if any advantages are to be maintained.

Overall, while accepting the possibility of purified nitrogen being of benefit in certain applications, we don't think that the cost and possible inconvenience are justified for normal passenger car use.
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Former owner of: Dolphin Blue 156 GT, feline kit (black mesh grille and quad exhausts)
Black Onyx Solstice Alloys
380/360 led drls.
Osram Nightbreaker Plus Gold Edition bulbs
K&N Air Filter.
Personalised plate.


The replacement; Summit White Astra (J) GTC VXR

Post Wed May 22, 2013 8:13 pm
mrizzle User avatar

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And here's what the tyre manufacturers say,

"Goodyear Tire & Rubber Co. is ambivalent about the use of nitrogen... Michelin goes a step further. They recommend nitrogen ONLY for tires used "in high risk environments” like aircraft landing gear and racing."

Taken from:

http://www.thetruthaboutcars.com/2007/1 ... -nitrogen/

More on the topic:

"In truth, most drivers are going to wear out their tires long before the rubber will decay enough to lower tire performance or safety; those radials will last until much of the gas– any gas– seeps out. I repeat: whether you drive a lot or a little, internal tire degradation isn’t much of a worry.

Proper inflation is the real issue"

Or from another source, " You will not be able to feel any difference in the ride or handling or braking, unless your tire pressures were seriously out of spec and changing to nitrogen brought them back to the proper numbers."
Image
Former owner of: Dolphin Blue 156 GT, feline kit (black mesh grille and quad exhausts)
Black Onyx Solstice Alloys
380/360 led drls.
Osram Nightbreaker Plus Gold Edition bulbs
K&N Air Filter.
Personalised plate.


The replacement; Summit White Astra (J) GTC VXR

Post Wed May 22, 2013 8:49 pm
bigmac3161 User avatar

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MaX83 wrote:
bigmac3161 wrote:
They put nitrogen in the tyres on a tv show and the car actually handled cornered and braked worse on nitrogen than standard air so smoke on that when air free


I heard about that test, 5th gear i think... cant comment though as i've never used nitrogen in my tires before.

Yip it was 5th gear.
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Post Wed May 22, 2013 10:32 pm
jactac User avatar

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This is far too techy. :crazy:
From now on it's custard for me. :thumbup:
RCZ 156 GT
Opal White,
NG4 Sat Nav, Latest firmware/Maps/Speed cameras
Interior Sport Kit,
Onyx Black Solstice 19's,
Front RCZ Splitters
Phillips H7's Diamond Vision/Phillips X-treme vision
380/360 Led DLR's
Paint & Interior leather protection

Post Thu May 23, 2013 5:59 am
MaX83 User avatar

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bigmac3161 wrote:
MaX83 wrote:
bigmac3161 wrote:
They put nitrogen in the tyres on a tv show and the car actually handled cornered and braked worse on nitrogen than standard air so smoke on that when air free


I heard about that test, 5th gear i think... cant comment though as i've never used nitrogen in my tires before.

Yip it was 5th gear.


Did that episode explain why nitrogen filled tires performed not as good as air filled tires?
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Current: 2013 Peugeot 308 GTI THP 200
2013 BMW 328i(A) F30 M-Sport

Ex: 2013 Peugeot RCZ THP 200
2011 Citroen C4 THP 155
2008 Peugeot 207 GT THP 150

Post Thu May 23, 2013 6:06 am
MaX83 User avatar

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Funny thing, this episode will be on telly Friday... LOL, guess i dont have to watch the episode anymore :greetings-wavingblue:
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Current: 2013 Peugeot 308 GTI THP 200
2013 BMW 328i(A) F30 M-Sport

Ex: 2013 Peugeot RCZ THP 200
2011 Citroen C4 THP 155
2008 Peugeot 207 GT THP 150

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