14" or 15" - Page 2 - Toyota Yaris Forums

Jem_hadar · 09-28-2010, 01:33 PM

Yup, my (Canadian) 07 Yaris Hatchback LE came with 14s.

(time to replace these babies too... down to 2mm... yikes)

djct_watt · 09-28-2010, 02:07 PM

Some yarii have 14's, some 15. Look on the tire xxx/yy/Rzz, zz representing wheel size.

And in terms of OD effect, there is none unless you alter the overall wheel size by choosing the WRONG size tire, and you could do the exact same thing on any size wheel. The way it works is that if you have a 14 inch rim, your tire sidewalks will be taller than the 15. In terms of efficency, assuming tire performance and width are equal, the smaller wheel is always more efficient. Tire weight is all in the tread, which spans the same circumference. The wheel weight, similarly, is carried on the outer edge of a wheel. Rotational Inertia (force required to accelerate a wheel) = mass x radius^2. It's why all race cars use the smallest wheels possible that fit over the brakes. If a sports car has 18" wheels, it's not because it's prettier, it's because the brakes are 16inches with a set of giant pistons on top. Eco-cars alike also do the same, but they,unlike sports cars, have tiny brakes to match their tiny power.

firemachine69 · 09-28-2010, 03:14 PM

I got 14 inchers. This was only for 2007 IIRC, and only if you went with a base model or the "convenience B" package.

thebarber · 09-28-2010, 10:09 PM

Quote:

Originally Posted by firemachine69

I got 14 inchers. This was only for 2007 IIRC, and only if you went with a base model or the "convenience B" package.

only way to get 15's in canada for 07MY is by buying an RS

09-28-2010, 01:33 PM	#19
Jem_hadar MORDSITH View User's Garage Drives: 2007 Yaris Hatchback Join Date: Apr 2006 Location: Collingwood, ON Posts: 632	Yup, my (Canadian) 07 Yaris Hatchback LE came with 14s. (time to replace these babies too... down to 2mm... yikes) __________________ 2007 Yaris Hatchback 5 Door LE, Manual, Package B, Bayou Blue Metallic

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09-28-2010, 02:07 PM	#20
djct_watt Drives: 2010 NCP91 5spd Join Date: Nov 2009 Location: Thailand Posts: 449	Some yarii have 14's, some 15. Look on the tire xxx/yy/Rzz, zz representing wheel size. And in terms of OD effect, there is none unless you alter the overall wheel size by choosing the WRONG size tire, and you could do the exact same thing on any size wheel. The way it works is that if you have a 14 inch rim, your tire sidewalks will be taller than the 15. In terms of efficency, assuming tire performance and width are equal, the smaller wheel is always more efficient. Tire weight is all in the tread, which spans the same circumference. The wheel weight, similarly, is carried on the outer edge of a wheel. Rotational Inertia (force required to accelerate a wheel) = mass x radius^2. It's why all race cars use the smallest wheels possible that fit over the brakes. If a sports car has 18" wheels, it's not because it's prettier, it's because the brakes are 16inches with a set of giant pistons on top. Eco-cars alike also do the same, but they,unlike sports cars, have tiny brakes to match their tiny power.

09-28-2010, 03:14 PM	#21
firemachine69 School'er of hard knocks Drives: Silver Yaris 4dr. HB Join Date: Oct 2008 Location: Sudbury, On Posts: 556	I got 14 inchers. This was only for 2007 IIRC, and only if you went with a base model or the "convenience B" package.