what is the different between Tyre's size 195/55/15 and 185/65/14?

Question

if my car is a 1.6 auto (16 valve ,dohc ,cvvt engine)
max power :110ps/6000rpm
max torque : 14.8 kg.m / 4500rpm
which saiz of tyre can i use to get maximum comfort , performance of my car?
which saiz of tyre gives better fuel consumption?

Answer 1

195/55/15 is a bigger rim and a wider taller tire, 185/45/14 is shorter slimer and a smaller rim, you wouldn't be able to switch out these tires becase they are two different rim sizes, unless you have different rims. Also, it depends on how much room you have between the coil springs and the tires if you want a taller tire. If you tell me what kind of car you have I could be able to tell you.

Answer 2

There's a lot of technology in tyres.
Tyres from different manufacturers can differ widely, even if they are supposed to have the same specification.
Generally speaking you have to find a balance between ride and handling.
A tyre with size 195/55 x 15 means it is designed to go on a wheel of 15 inches diameter, the width of the tyre is 195 mm , and the aspect ratio is 55 %. This means that the tyre measures 0.55 x 195 mm from the road to the wheel, and the same again for the top part which is not touching the road.
So the total diameter of the tyre is 2 x( 0.55 x 195 mm )+ 15 inches. I know it is confusing having two different units, but that is how they do it.
In this case then the total tyre diameter is ,595.5 mm or 0.5955 metres, about 23.45 inches.
For the 185/65 x 14 tyre we have 2 x (0.65 x 185) + 14 inches, which gives a total tyre diameter of 596.6 mm or 0.5966 meters, about 23.47 inches.
Sports cars have a very low aspect ratio because you don't want them to flex too much when taking curves at high speed.
Luxury saloons will have higher aspect ratios because they are designed more for comfort.
Some sports cars have different sized tyres front and rear.
This can also be due to weght distribution and many other factors.The rear drive, rear engined Porshe 911 is a particular example, and front wheel drive cars, four wheel drive cars, and mid-engined cars all have their own handling characteristics.
Some tyres are better in dry conditions, some in the wet. There are special snow tyres, off road tyres and tyres for many other applications.
Car magazines often do tests on tyres, so they can be useful.
Always make sure the tyres are inflated to the correct pressure. Remember, air will expand in hot tyres and in hot weather.
Very wide tyres tend to aquaplane more in the wet.
Locking wheel nuts are a good idea, there are people who specialise in stealing wheels and tyres.

Soft compounds generally give better grip and harder compounds generally last longer

Answer 3

The 15 and 14 are the diameters (in inches) of the steel or aluminum wheels on your car. That is one thing that you are stuck with unless you buy new wheels (separate from any tyres you buy).

The first number (195 and 185) is the length (in mm) of the rubber tyre from the inner edge of the tyre (where it sits on the wheel) to the outer edge (where it meets the road.

the middle number (55 and 65) is the aspect ratio (in percent) of the length (above) of the tyre to the width.

In general, the larger the length the better the ride (and the more expensive the tyre).

I have a similar type of car based on the specs you give, and I use 185/65/14

One more thing: sometimes there is an 'R' before the wheel diameter (i.e. R14). This means the tyres are radial tyres. If there is no R, they are bias-ply tyres. Always get radial tyres for better handling and fuel efficiency.

.

Answer 4

Well you have 2 different rim sizes listed a 15" and a 14"

Your best bet is to stick to the size that is currently on the car because changing tire size will effect the speedometer and odometer check here, http://www.discounttire.com/dtcs/infoTireMath.dos

I think just choosing the original size would be best and asking what brand is the most comfortable ride in that size tire.

My Suggestion would be the Michelin XGT V4
They are a bit pricey but offer a great ride.

Answer 5

Changing from the recommended tire size (usually found by opening a door and locating a sticker) will give false results in mileage and performance. You cannot change between 14 and 15 without changing your wheels and there might be some clearance issues. Many people think they are getting better performance and mileage by switching from manufacturers recommendation but don"t realize that the transmission is set up for a specific size tire so their speedometers and odometers have become inaccurate. Do your homework if you want to change. The transmission can be altered for a change in tires but do you really want to do this?