Changing from a smaller rim size to a larger one would require an owner to switch car tyre to a lower profile tyre. so what is this 'low profile' means?
the characteristics:
Pros:
-accommodate larger rims without altering the original wheel and tyre size (height)
-look sportier
-more responsive/precision (direction change - cornering /braking - bigger brakes can be fitted)
-wider (surface against the road)
Cons:
-have stiffer side wall
-harsher and noisier ride due to running at higher pressure and precision
-more expensive
-get damaged easier by potholes
-fast wearing
-increased risk of rim damage
-wheel arch clearance issue
As a matter of fact, the higher profile tyre has the opposite traits of low profile ones. But its control at high speed is reduced.
Phrases commonly used:
Wheel diameterMeasured at 13-inch and so on.
Sidewall heightSidewall tire is also known as profile tyre.
How to interpret the measurement?
P195/65R15
p is for intended use that is passenger car or LT means light truck (often omitted)
195 is the tread width in mm.
65 is the sidewall height which means 65% of tread width.
15 is the wheel inch.
Why a low profile tire?
A lower profile tire is more precise because its sidewall, being shorter and stiffer, will flex less in cornering and transition maneuvers.
This higher rigidity also causes the tire to be less comfortable, because tire sidewalls act like springs whenever they hit pavement irregularities.
A stiffer sidewall will allow the impact to be felt more acutely by the occupants and a shorter one will make the wheel more likely to be damaged in the event of such an impact.
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