Wont spare tyre be useless if you change your rims??

[Cerano]

kindly note my former concern bro

 

i know the overall diameter doesnt change but

 

"

i wasnt concerned with the overall diameter of the tyre because i know increased profile will make up the diff. i was concerned that since there is more rubber due to the higher profile, it will be compressed more on that corner and the sidewalls will not be able to take it and thus fail. "

 

 

[Ken4555]

Will not be useless,

 

Example, if for a 15" rims, the specs are :

195 /65 R15

 

If you up 1 size to 16", you must get a specs like

205 /55 R16

 

So even though you change to a bigger rim, you must get a "55" (smaller size but for 16") tire. In this way, your 15" spare tire still can be used on 16" rims

 

(i got this knowledge from some tire shop, good to know)

 

 

just to share... did you know that if you compare...

 

195/55/16 VS 205/55/16 VS 215/55/16....

 

looks all the sme size but the last one is the biggest in diameter...

 

cause its 55% or 215... VS 55% of 205... VS 55% of 195...

 

 

 

got this link from one of the brothers here good to use...

 

http://www.miata.net/garage/tirecalc.html

[Ken4555]

I just keep a tyre repair kit with me......

 

same here but i only carry it when going into Malaysia... the canned auto seal type...

 

spare tyre and jack added weight dont like...

Edited May 13, 2010 by Ken4555

[Qes78]

Usually, 1 of the first thing i do when i get my car is to remove the spare tire....

[Happily1986]

Unless your overall rolling diameter changes drastically, it wouldn't be dangerous to use the spare tire for events like a short drive down to the nearest tire shop to do a proper tire patchup or tire swap.

 

Fyi, theoretically your spare tire is supposed to be included in the cross tire rotation with your 4 tires in order to prolong tire use. Theoretically la.

[Gohsj89]

not really in my case..

coz overall diameter still about the same