Help with spare tire - 2020 Continental Reserve

[oldDave]

I just bought a used 2020 Continental Reserve from an out-of-state dealer. Once I took delivery, I discovered it was missing the spare and jack - the whole trunk was cleaned out! Honestly, who removes that when they trade-in a car? Anyway, I'm having trouble trying to find a replacement spare. The full-size tires on the car are 245/40R20. The only spares I see online (ebay) are 18 inch rims. Will those work? Any help is greatly appreciated!

 

[Action]

The 18 may be teh correct size.

My second gen Navigator has 18s on the ground. The spare is a 17. That is how the ride was made. That original spare is still under there, 17 years later. Hope it stays that way.

I believe the tire sticker on the driver's door post states the different tires sizes.

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[oldDave]

Thank you! I do not know why I didn't check the tire sticker from the start. At least I know what I'm looking for now. Appreciate the help!

 

[Vegascruiser]

The correct compact spare for your car is T155/75/R18

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[G-776092]

Thanks, fellas - I appreciate the help!

 

[MarkX]

The 18 may be teh correct size.

My second gen Navigator has 18s on the ground. The spare is a 17. That is how the ride was made. That original spare is still under there, 17 years later. Hope it stays that way.

I believe the tire sticker on the driver's door post states the different tires sizes.

Action

Tires do not last forever. A 17 year-old spare tire may inconveniently let you down even if it has never been on the road. I would advise you to buy a used tire, but a newer tire, that is the right size and throw out the original. You don't want to get stranded with two flat tires.

 

[Action]

You are correct. That original spare is not a tire to be trusted. It may be inconvenient, however it will not be unknown.
I have owned my Navigator for 7 years. Just getting ready to put my second set of 4 tires on it soon. Still not replacing the spare.
I just do not need a spare tire. Not even sure how much air is in it. It is a risk I am willing to take.

Contrast that to an earlier experience I had about 30 years ago towing a dual axle travel trailer with an E 150.
Had two flats on the same trip within a couple of hours of each other.
The single spare only went so far, before a second tire went over a road hazard and was toast.
I was in Mexico at the time. The nearest Mexican tire shop in Rocky Point did not have any radial tires in my size.
I brought my two bad tires on rims and bought two bias ply tires.
I have first hand experience of the reason not to mix bias ply with radials. It was not fun driving.
When I got back to Phoenix I bought four new radial tires. Kept the bias ply for my trailer which already had bias ply.

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