Hey,

I run 235/45r17 in the summer on my 01 B5 but my spare remains the stock size of 225/45r17... I beleive that the save percentage is 5% for our cars.. correct me if im wrong? i see a difference of 1.39%

So technically could I use a 225/45r17 as a spare once in a while, if so should it only be for short distances or can I do a couple hundred miles if I get a flat on a highway in the middle of nowhere?





Stock Tire - 225/45R17 >Search Tires

Section Width:
8.85 in
225 mm

Rim Diameter:
17 in
431.8 mm

Rim Width Range:
7 - 8.5 in

Overall Diameter:
24.97 in
634.23 mm

Sidewall Height:
3.98 in
101.09 mm

Radius:
12.48 in
316.99 mm

Circumference:
78.44 in
1992.3 mm

Revs per Mile:
832.9

Actual Speed:
60 mph
100 km/h




Tire 1 - 235/45R17 >Search Tires

Section Width:
9.25 in
235 mm

Rim Diameter:
17 in
431.8 mm

Rim Width Range:
7.5 - 9 in

Overall Diameter:
25.32 in
643.12 mm

Sidewall Height:
4.16 in
105.66 mm

Radius:
12.66 in
321.56 mm

Circumference:
79.54 in
2020.3 mm

Revs per Mile:
821.4

Speedometer1:
59.1 mph
98.6 km/h

Speedometer Difference: 1.400% too slow (235)

Diameter Difference: 1.39% (235)

Thanks,
Michael

 

daimeter doesnt matter much, you will see some under stear on taht side but you can deff get away with driving on it if you had too, just dont go 1000 miles on it.

 

I had a flat tire on my 235 a couple weeks ago when I was back home. I changed my departure time back a couple hours because I didnt think it was good to make the 950km trip back to Ottawa on my 225 spare...