SpareTire

hoys

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Hard to tell exactly in the picture, but I am assuming this fits with the wheel well mounted subwoofer, correct?
 

1612202

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New Tourx Owner
The subwoofer does fit in the wheel and the original hold down rod and nut fit. I had planned to use the wheel and tire from my 2015 Chevy Volt as a spare but there is no way for a wide tire to clear the support towards the front of the tire well. I also tried to fit a 145/70/17 compact spare and it would not clear the support. Not the best pictures I've ever taken.
 

hoys

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Thanks for clarification! I'll be looking for one.
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Motormouth

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Philadelphia, PA
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Regal TourX
You’re the man! I came here to find this info haha.

Living in a city (Philadelphia), you gotta have a spare because of glass (and waiting forever for roadside is no bueno).

My last car had the bose stereo inside a full size spare so I knew it would be possible. Thanks!
 

Rhetoric

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2018 TourX
This is great!

My only concern would be that the tire used here (125/70R17) is 12.3% shorter than stock. That's quite a huge gap that could cause issues with the AWD system (mechanically and electrically). But I suppose if your goal is to limp a very short distance to safety, then that would work.
 

tinmanwpk

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Better than sitting on the side of the road, or in some of the finer neighborhoods of Philadelphia (and I'm not talking about the Main Line).
 

Motormouth

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Philadelphia, PA
Buick Ownership
Regal TourX
For sure.

I guess ‘compact’ spare is the right term? I checked the stats of the cts sport wagon’s ‘compact’ spare:

Stock tire 235/50/18 (18x8) 27.3” roll dia
Spare tire 135/70/18 (18x4 rim) 25.4” roll dia

I think thats a 7-8% difference. We’ll have to find the correct rolling size, and ensure it clears the brake calipers (offset) and rotor.
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1612202

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New Tourx Owner
The wheel does clear the front rotor with plenty of room to spare. It also clears the caliper but is a tight fit. I drove the car around the neighborhood making several tight right and left turns and did not have a problem. I mounted the tire on both front wheels to be sure of fit. The rear brake assembly is much smaller then the front so I saw no reason to mount the wheel.
 

Rhetoric

SUPPORTING MEMBER
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MPLS
Buick Ownership
2018 TourX
The wheel does clear the front rotor with plenty of room to spare. It also clears the caliper but is a tight fit. I drove the car around the neighborhood making several tight right and left turns and did not have a problem. I mounted the tire on both front wheels to be sure of fit. The rear brake assembly is much smaller then the front so I saw no reason to mount the wheel.
Sounds like it works, even with the size difference! That's great news as I shop for non 17" winter wheel and tire options.
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hoys

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MelsRegal

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Regal GS 2017
yes that is a work around but somewhat labor intensive in the middle of a rainy night.
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milicz

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2018 Buick Regal Tour X
did you contact Modern Spare and ask them if they have the correct wheel?
I read this:
  • Conveniently Fits Inside Trunk Tire Well With All Necessary Mounting Hardware Included. *Trunk Tire Well Mount Not Compatible With TourX & Sportback Models*
What does that mean exactly? Looking to get a spare.
 

Kappy

New member
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Michigan
Buick Ownership
2018 Regal TourX
If anyone is interested in a spare tire the oem part number is 84095141 for the 17X4 inch wheel. Tire rack sell the tire for around$60. A spare from a 2006Buick Lucerne or a Cadillac DTS 2006-2011 125/70/17 fits with room for a jack and tools.
with a little research, according to www.gmpartsdirect.com wheel 84095141 is listed as fitting Regal Sportback & TourX. A little more checking and it also is listed as fitting the 2018 Equinox/Terrain. A quick check of Ebay shows 125/70-17 is what comes with 18 Equinox/Terrain as a spare.
So now what jack will work?
 
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