Does anyone know if 175/65/r15 fit on the front of the smart 451?
The standard tire and rim sizes are 175/55R15 77T 5.5Jx15 ET22 rear and 155/60R15 74T 4.5Jx15 ET23.5 front.
The official minimum rim width for a 175/65R15 tire is 5J so a local tire fitter could refuse to fit it to the 4.5J rim.
The outside diameter of a 175/55R15 tire is (15 x 25.4) + (175 x 1.1) = 573.5mm
The outside diameter of a 155/60R15 tire is (15 x 25.4) + (155 x 1.2) = 567mm
So the ratio of the outside diameter of the standard rear tire to the outside diameter of the standard front tire is 573.5 / 567 = 1.01
1.01 means that the outside diameter of the rear tire is 1% bigger than the outside diameter of the front tire. This is the ratio that you need to keep close to.
To keep close to the standard ratio, increase the size of the rear and front tires by the same amount.
For example:
Option 1
175/60R15 rear and 155/65R15 front
Option 2
175/65R15 rear and 155/70R15 front
Option 3
185/55R15 rear and 165/60R15 front
Option 4
185/60R15 rear and 165/65R15 front
Option 5
195/50R15 rear and 175/55R15 front
Option 6
195/55R15 rear and 175/60R15 front
Option 7
195/60R15 rear and 175/65R15 front
Option 8
205/55R15 rear and 185/60R15 front
Out of these eight options, I would choose Option 3 as it provides a noticeable improvement in ride comfort, keeps the gearing close to standard, and good matching tires are available. The tire sizes in Option 7 have the biggest outside diameter, have the potential to provide the best ride comfort, good matching tires are available, however this size does raise the gearing a lot. All of these eight options will fit the standard 5.5Jx15 ET22 rear rims and 4.5Jx15 ET23.5 front rims. None of the tires should rub, except possibly slight rubbing on the front with Option 7 and Option 8. 175/50 and 185/55 tyres won't fit a 4.5J rim, and need at least a 5J rim.
Vredestein Quatrac 5 185/55R15 82H
Find Vredestein Quatrac 5 tires at great prices, customer reviews and more from the Internet Source for Vredestein Tires, Vulcan Tire Sales (vulcantire.com). Fast shipping to your home or installer.
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Vredestein Quatrac 5 165/60R15 77H
Vredestein Quatrac 5 195/60R15 88H
Find Vredestein Quatrac 5 tires at great prices, customer reviews and more from the Internet Source for Vredestein Tires, Vulcan Tire Sales (vulcantire.com). Fast shipping to your home or installer.
www.vulcantire.com
Vredestein Quatrac 5 175/65R15 84H