Somebody 'plain this.....

[bobmbx]

Was crawling around under the '17 Expy XLT yesterday and noticed the tread design on the spare was different than the the other 4. Sure enough, my spare is a Goodyear Wrangler while the original tires are the Hankooks.

While typing this, it occurred to me that I need to look again to make sure its the same size (in diameter, any way).

 

[Black]

Was crawling around under the '17 Expy XLT yesterday and noticed the tread design on the spare was different than the the other 4. Sure enough, my spare is a Goodyear Wrangler while the original tires are the Hankooks.

While typing this, it occurred to me that I need to look again to make sure its the same size (in diameter, any way).

I am guessing you have the 20” wheel upgrade?

The Goodyear Wrangler were OEM for 18” wheels. You likely have an 18” spare but similar overal diameter.

I have 18” wheels and a 17” spare.

 

[Gary Waugh]

As stated above, you probably have the 20" upgraded wheels (they came standard on my limited), but the spare is a cheap pressed steel 18" with wrangler tyre, at least its a full size spare not those horrible skinny things!!

Gary

 

[powerboatr]

I am guessing you have the 20” wheel upgrade?

The Goodyear Wrangler were OEM for 18” wheels. You likely have an 18” spare but similar overal diameter.

I have 18” wheels and a 17” spare.

yep thats the deal a standard 18" wheel and tire

 

[1955moose]

Wouldn't lose any sleep over it. Just don't leave it on more than 25 miles if you can help it. 4 wheel and all wheel drive vehicles can have differential problems if you have one or more different sized tires. On some even a different tread pattern can throw off the differential. Has to do with the computer, I believe. Maybe one of the others can elaborate on this. Just make sure your tire pressure is up on spare. I check mine about once a year, and pump it to the max on tire.

Sent from my N9131 using Tapatalk

 

[LokiWolf]

Wouldn't lose any sleep over it. Just don't leave it on more than 25 miles if you can help it. 4 wheel and all wheel drive vehicles can have differential problems if you have one or more different sized tires. On some even a different tread pattern can throw off the differential. Has to do with the computer, I believe. Maybe one of the others can elaborate on this. Just make sure your tire pressure is up on spare. I check mine about once a year, and pump it to the max on tire.

Sent from my N9131 using Tapatalk

The 18 Spare has the same rolling diameter as the 20 inch combo. Absolutely 0 issues running it. Ran ours on our 15 for 300+ miles while the dealer was repairing one of the 20’s they messed up.


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[chuck s]

Yep, and our trucks are not full time 4x4 (like a Subaru) if you keep it in 2H. Rarely any need to run other than 2H anyway.

-- Chuck

 

[Plati]

Yep, and our trucks are not full time 4x4 (like a Subaru) if you keep it in 2H. Rarely any need to run other than 2H anyway.

-- Chuck

I guess you're saying they aren't fulltime 4x4 if you keep it in 2H because if you keep it in 2H they are never 4x4?

 

[chuck s]

Our trucks aren't fulltime 4x4 by any definition. They're selective 4x4 at best. Full time 4x4 vehicles, like Subarus, don't offer any options. They're always 4x4 -- AKA full time 4x4.

Having matched tires on all 4 corners is vital on a full time 4x4 vehicle like a Subaru. Get a flat on one of these cars you buy four (4) new tires, not 3 like our trucks.

-- Chuck

 

[JExpedition07]

A crossover like Subaru isn’t 4x4 like an Expedition as it doesn’t have a Transfer Case that mechanically locks the front and rear driveshafts with a 50/50 constant torque split. It’s AWD and has a power transfer unit like a Ford Edge or Explorer. By definition 4x4 is selectable and controlled by the driver via shifter or switch.

Big difference, hop under a 4WD Expedition and look at the large 2-speed BorgWarner T-case and then hop under an Explorer and it’s got a little PTU instead.