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Tom, ASE Certified Technician
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Hi winter tire shopping question. Stock size of the SUV is

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Hi winter tire shopping question. Stock size of the SUV is 235/65R18 but it's running on 17 inch wheels and tires for the winter. Would you have a webpage listing the options I would have in an acceptable range for width and height of tire thanks
What year and model is the car?
Customer: replied 4 years ago.

2005 Murano SE

This is right from Nissan let me know if it helps.
30" Outer Diameter, Nissian Murano OEM

SORTED BY TIRE WIDTH SORTED BY RIM SIZE Size Tire Var. 80 MPH Size Tire Var. 80 MPH 235/45R22 1.08% 79.1 235/65R18 0.00% 80.0 (OEM)

81.2

-1.44%

245/60R18

79.5

0.59%

235/55R20

235/55R19 -2.82% 82.3 245/65R18 1.77% 78.6

79.9

0.16%

255/60R18

79.7

0.34%

235/60R19

235/65R18 0.00% 80.0 (OEM) 265/60R18 1.70% 78.6

80.2

-0.30%

275/55R18

80.8

-0.95%

245/40R22

82.1

-2.67%

285/50R18

78.2

2.22%

245/45R22

245/50R20 -1.20% 81.0 285/55R18 1.13% 79.1

81.0

-1.30%

295/50R18

81.1

-1.32%

245/55R19

245/60R18 -1.44% 81.2 295/55R18 2.52% 78.0

82.3

-2.82%

235/55R19

78.6

1.77%

245/65R18

79.7

0.34%

235/60R19

79.9

0.10%

255/40R22

255/50R20 0.13% 79.9 245/55R19 -1.32% 81.1

79.9

0.14%

255/55R19

79.9

0.14%

255/55R19

255/60R18 0.16% 79.9 265/50R19 -1.93% 81.5

78.7

1.56%

265/55R19

81.9

-2.38%

265/35R22

80.5

-0.58%

275/50R19

79.1

1.14%

265/40R22

265/45R20 -2.08% 81.7 285/50R19 0.73% 79.4

79.5

0.59%

235/55R20

78.9

1.42%

265/50R20

265/50R19 -1.93% 81.5 245/50R20 -1.20% 81.0

79.9

0.13%

255/50R20

78.7

1.56%

265/55R19

81.7

-2.08%

265/45R20

78.6

1.70%

265/60R18

275/35R22 -1.42% 81.1 265/50R20 1.42% 78.9

80.7

-0.86%

275/45R20

78.3

2.16%

275/40R22

275/45R20 -0.86% 80.7 285/45R20 0.33% 79.7

81.9

-2.42%

295/40R20

80.5

-0.58%

275/50R19

78.8

1.49%

295/45R20

80.2

-0.30%

275/55R18

285/35R22 -0.49% 80.4 235/45R22 1.08% 79.1

80.8

-0.95%

245/40R22

79.7

0.33%

285/45R20

285/50R19 0.73% 79.4 245/45R22 2.22% 78.2

79.9

0.10%

255/40R22

82.1

-2.67%

285/50R18

81.9

-2.38%

265/35R22

79.1

1.13%

285/55R18

295/35R22 0.43% 79.7 265/40R22 1.14% 79.1

81.1

-1.42%

275/35R22

81.9

-2.42%

295/40R20

295/45R20 1.49% 78.8 275/40R22 2.16% 78.3

80.4

-0.49%

285/35R22

81.0

-1.30%

295/50R18

295/55R18 2.52% 78.0 295/35R22 0.43% 79.7 305/35R22 1.33% 78.9 305/35R22 1.33% 78.9
Customer: replied 4 years ago.

No not really it's confusing. Plus there's no 17 inchers. If you can relist the question maybe thanks


 


 

Let me post another list for you.
Customer: replied 4 years ago.

ok

Did you get the other list?
Customer: replied 3 years ago.


no

Downsizing is great for that second set of winter tires. Snow tires tend to become much more expensive at sizes larger than 17”. In addition, the narrower the tire, the more effective it tends to be on snow and ice. So if you have 18” or 19” wheels and want an extra set of wheels for snow tires, it’s often a good idea to go down to 17” or 16” wheels for the winter set, which will give you better winter performance at a lower price.

A Bit of Math

So the math goes like this:

  • Multiply the width by the aspect ratio expressed as a decimal. (225 x 0.55 = 123.75)
  • Convert the aspect height to inches. (123.75 / 25.4 = 4.87)
  • Multiply the aspect height by 2. (4.87 x 2 = 9.74)
  • Add the inside diameter of the tire. (16 + 9.74 = 25.74)
  • Rinse and repeat for the size of the new tire.

So if I were to upsize to a 17” wheel and keep the width of the tires the same at 225mm, and the aspect ratio the same, the new 225/55/17 tire would have a standing height of 26.74 inches, and my speedometer would be off by more than 2 miles per hour. What I need in order to keep the correct size is a 225/50/17. If I were to also change width, say, from 225 to 245mm, then what I would need is a 245/45/17.

Did I say it was a bit of math? Perhaps it’s just a bit more than a bit. Don’t worry, that’s what computers are for, which is why I use the Tire Size Calculator at Miata.net, or if that doesn't work for you, the one at 1010 tires.com. Plug in the old and new tire sizes and the app will give you the percentage difference between them and tell you what the new size will do to your speedometer readings.

In general, you want the tires to have less than 1% difference. Ideally, you want less than 0.5% difference. Or you can just trust your tire professional, but with the added confidence of knowing what the heck they’re talking about. Knowing is, after all, half the battle. This link will also help it goes the same for the 17 inch rim.
ClickHere
Hoped this helped.Please rate excellent service so I can get Credit for my help thanks. Bonuses greatly appreciated.

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