|“How often should you rotate tyres|
(tires) and how do you know when they are at the right pressure if you don’t have a tire
The only thing I could think of here was the valve caps which
have an integral gauge, but other people knew better!
We have now received some more advice on tire (tyre)
In Finland, where we have to use
different tyres in winter and in summer, rotation is no problem — every time you change
tyres, rotate them. This guarantees even wear throughout.
In an area where tyres do not need to be regularly changed, a visual inspection of wear
could be the first thing to do. Car accessory dealers sell groove gauges to measure groove
depth, another good indication when rotation becomes necessary. Otherwise, I would suggest
an interval of once a year.
Driving habits have a significant effect on tyre wear and thus on rotation frequency, but
let’s not get into that here.
Many modern tyres have a specific direction of rotation marked on the sidewall with an
arrow. Never set your tyres to roll backwards as this may be a safety hazard. In practice
this means that you can only rotate such tyres by changing them from rear to front and
vice versa on one side of the car.
Thanks again to Kimmo
Linkama of Finland.
Janet Drone gave the following
“How often you should rotate tires depends on the
quality of the tire. For example: Goodyear rotate every 10,000 miles, other
tires of less quality, every 5/6,000 depending on the wear.
The maximum pressure for the tire is written in small type
around the side of the tire, next to the metal wheel rim. It is the PSI (pounds per
square inch) number and will read like this “(44 PSI) max pressure”. Max
pressure means the most air to be put into this tire NEVER exceed this amount. This
maximum pressure is used when you are carrying a heavy load, however, this is not the
daily standard amount of pressure. The daily usage, standard amount for the tire
65/175 R14 is between 32 – 34 pounds of air. For these size of tires and the 15’s,
this standard pressure is used.
(Your vehicle hand book gives the pressures
required for your particular vehicle – sometimes the front tires are different to the
To get correct PSI readings always check the air pressure
before you drive your vehicle while the tire is cold. Why? because of heat and
expansion. Heat/Expansion will increase the gauge reading by 3 – 5 pounds.
To give you more information regarding tires, the size is in
large type around the side of the tire. It will read like this 65/175 R14.
This tire is considered a size 14. When shopping for tyres always use the following
example XX/XXX X XX.
With regard to knowing when tires need air – Janet suggests
learning what your tires look like when they are at the correct pressure e.g. how much the
tire bulges, how deep is the rubber from road to rim etc. with experience it soon becomes
obvious when they are low on air. It is also advisable to get into the habit of
checking your tires weekly or every time you fill up, this way they will always be safe.
Nick Twist says –
Don’t rotate them. If you don’t
change the tyres around you will see by the wear pattern if there is a
problem with that particular wheel/suspension unit. Problems such as
tracking adjustment, worn bearings, binding brakes, even worn out dampers
all give different wear patterns. If nothing else the tyres will wear out
two at a time for a less dramatic replacement bill.
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