Hello folks,

I just recently upgraded to 19" rims and is wondering if I would be able to use the OEM spare for my car (08' IS250) in case of a flat? If not, are there any 19" spares that would fit in the compartment that currently houses the OEM spare 18" rim?

Thank you for your help and Happy 4th of July to all!!!!

Be safe out there!

 

I think you can buy an IS-F spare.

Wheel: 74204, Spare
18 Inch spare wheel compatible with F-Sport brakes. Recommended Tire size 135/70R18

 

does anyone know the specs of the ISF spare? Maybe I can just find a wheel with similar specs.

And will this fit in the spare tire compartment?

 

Your best bet is find G35s spare. working find with 19 set up

 

here is the link on ebay if you like
http://www.ebay.com/sch/i.html?_odkw...+tire&_sacat=0

 

The G35 spare looks better than my OEM 17s

:*(

 

Thanks for all the input. But my main concern is if I do get a 19" spare (ISF/G35), will that fit in the spare tire compartment (underneath the trunk mat/lining) in the trunk?

 

I think what these people are saying is that 17 inch Infiniti setup will be the same overall diameter as your 19 inch wheels... So a 19 inch wheel is not necessary for a spare.

 

Why do you need a bigger spare?


The only reason other members needed to go with the ISF spare is to clear a BBK and still fit in the trunk well. Simply having a larger diameter wheel does not mean the factory spare is going to be incapable of functioning as a temporary spare.

 

That's what I was wondering, thank you for clarifying that.

So my oem 18" spare will suffice as a spare in case of a flat with my 19" aftermarket wheels?

 

a 18" spare should be fine, just dont drive on it too long (i.e. why its a spare)

 

Ok this may sound ignorant or stupid but please bear with me, I come from an EVO background and for us it was bad to put a spare that is not the same diameter as the other 3 wheels because it will mess up the LSD.

If one of my 19" rear tires blow out and put in the OEM 18" spare which is of different diameter as the other rear wheel, will that mess up the differential?

 

This issue is not the diameter of the wheel/rims but the diameter of your tire. I have staggered 19" rims but the tire diamter of each is 25", which is close to the same as my stock 17" rims. The spare could be a 14" rim for all it matters, as long as it clears the brakes and has the same tire diameter. Your EVO would have been the same as an AWD IS, where it is bad to have non-matching tire diamters.

 

Besides aren't all IS spares on 17" rims? Mine is a 17" rim with a 145/70 tire.

 

naw it shouldnt