quick ? about tire size?

[nyyankee]

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]

go with the 245s

 

[wythors]

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

My car with 245/45ZR17's.

 

[nyyankee]

Are those Mavromont 17" wheels?

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

My car with 245/45ZR17's.

 

[wythors]

Yep.

 

[SVT32VDOHC]

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]

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.

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.