Tire Pressure and Sizes

[RMNDR]

Can I use size 185/65/15R for Toyota AQUA 2015? Because I want to improve the ground clearance.  The car came with 175/65/15R. What are the implications?

[MV-5]

find a ruler and get an idea about 6.5 mm length. 

[NRX]

3 minutes ago, MV-5 said:

find a ruler and get an idea about 6.5 mm length. 

Times 2 ?

[MV-5]

23 minutes ago, NRX said:

Times 2 ?

How? so you think axle is mounted to the top of the Tyre.  

[Davy]

1 hour ago, MV-5 said:

How? so you think axle is mounted to the top of the Tyre.  

You're right. 

"65" is 65% of the width of the tyre. So for a 185 (185mm) tyre, the sidewall height will be 185x(65/100) = 120.25mm. For a 175 (175mm) tyre, it's 175x(65/100) = 113.75mm. So the difference is 6.5mm (120.25 - 113.75). 

The car will gain 6.5mm (0.25 inches) ground clearance than stock. With this, the speedometer will indicate more than stock. For evey revolution of the tyres, the car will travel an extra 40mm which will add up to the mileage. 

 

[NRX]

1 hour ago, MV-5 said:

How? so you think axle is mounted to the top of the Tyre.  

Wasn't particularly mentioning the ground clearance though, had the diameter in mind

[Junkfriend]

it will affect the fuel economy I wouldn't do that if I were you, btw planning to go off road with the extra 00.25 inch ground clearance??

Edited April 8, 2018 by Junkfriend