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quick ? about tire size?

  • Thread starter Thread starter nyyankee
  • Start date Start date Jun 27, 2007

nyyankee

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Jun 27, 2007
#1
  • Jun 27, 2007
  • #1
Do you think 235/45/r17 is the best looking size for a 17x8 rim for a 93 Vert? Or, if I go with a 245/45/17 I should not need a speedo gear change. I already have 3:55's and I changed the gear with my stock 16's
 

Aliate X

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Jun 27, 2007
#2
  • Jun 27, 2007
  • #2
go with the 245s
 

wythors

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#3
  • Jun 27, 2007
  • #3
245/45R17 are nearly identical in diameter to the original 225/55R16 tires.

My car with 245/45ZR17's.

 

nyyankee

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#4
  • Jun 28, 2007
  • #4
Are those Mavromont 17" wheels?


wythors said:
245/45R17 are nearly identical in diameter to the original 225/55R16 tires.

My car with 245/45ZR17's.

Click to expand...
 

wythors

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#5
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Yep.
 

SVT32VDOHC

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#6
  • Jun 28, 2007
  • #6
235 and 245 will have nothing to do with speedo readings. Those are the sizes of the width of the tires...(What touches the ground)...if you went 40-45-50-60, the heigth, then I would worry about speedo changes.
 

wythors

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SVT32VDOHC said:
235 and 245 will have nothing to do with speedo readings. Those are the sizes of the width of the tires...(What touches the ground)...if you went 40-45-50-60, the heigth, then I would worry about speedo changes.
Click to expand...

Ummm.... not exactly. The whole size figures into it.

245/45R17

245=cross section of the tire in millimeters
45=sidewall height expressed as a percentage of the cross section
R=radial tire
17=wheel diameter in inches

245 divided by 25.4 = 9.65 inches

9.65 x .45 = 4.34 inches

4.34 x 2 + 17 = 25.68 inches total diameter

225/55R16 = 25.74 inches total diameter

No concerns about your speedo.
 
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