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Discussion Starter #1 (Edited)
I purchased a new 2017 Q50S at the end of March. It did not come with the spare tire. In fact, Infiniti has gone so far as to almost eliminate that as an option (more on that later).

After investigating how much trunk space I'd lose with the spare tire added, I decided to look for all of the parts to add it myself. The trunk space is not much of an issue for me, since we use our Rogue to do any kind of significant hauling.

Here is what I did to get the parts and install them. Note, you will see further on that Infiniti doesn't include all of the bolt holes necessary to truly add this as if it was from the factory. However, as you'll see, the way I installed it works great and is fully secure.

Parts You'll Need
1. Spare Tire/Wheel T145/70R18
2. Front Foam Insert
3. Left Foam Insert
4. Right Foam Insert
5. Inside Wheel Foam Insert
6. Jack and Jack crank Parts
7. Felt Blanket for Trunk with Spare
8. Cross Bar (recommended but not required)
9. 4 Thick Adhesive Rubber Pads (with single white lines on them)
10. Trunk Mat for Trunk with Spare
11. All Season Trunk Mat for Trunk with Spare (recommended but not required)
** Note, I didn't list the hub clamp parts, because if your Q50 is like mine you'll have no where to bolt it to! (strange is the spare even an option anymore?)

You have a couple options on where to get the parts. You can try and dig through Ebay, Facebook, Infiniti Parts through a Dealer, etc... However, I recommend you go straight to a salvage yard. Look for a car that is only damaged in the front or sides and that the trunk is in tact. I found the following website which is a central search site for salvage yards around the US. There are plenty of Q50 parts listed there! I was able to get everything listed above from one source and one 2015 Q50 shipped to me for only $320 and was all in great shape!

Car-Part.com--Used Auto Parts Market

Here is the spare tire/wheel I received.



Once you have all of your parts, proceed to post 2 to see how it all installs.
 

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Discussion Starter #2 (Edited)
Removal
- Remove the trunk mat(s) and the existing foam insert.
- Remove the rear plastic trim piece by extracting the cargo net pins and firmly lift up (there are a number of clips that are along the top edge)
- Remove the left side trim piece by removing the 2 plastic rivet pins and pulling the rear top lip down from under the rubber molding and finally pulling out as it releases the velcro at the front edge.
- Remove the right side trim piece the same as the left, except it has only 1 plastic rivet pin.
- Remove the felt and you now have a bare trunk. This is what mine looked like and notice it has no bolt holes for attaching the center hub clamp of the spare wheel.



Install
- Lay in the felt pad and reinstall the left and right trim pieces.
- Reinstall the rear plastic trim piece.
- Install the rubber pads as shown (note that I received 6 rubber pads - 4 thinner ones with white lines and 2 that were thicker and did not have lines, use the 4 thinner ones with white lines.)
- Bolt the cross bar in using only the middle 4 bolt holes. My car did not have holes in the trunk for the outer 4 bolt holes. You'll see below that I just laid the bar on top of the left and right trim pieces and bolted it with the inner 4 holes. A true spare trunk would have those outer holes and different trim pieces.


- Lay in the front foam insert


- Lay in the left and right foam inserts.
- Lay the spare tire/wheel in upside down.


- Lay in the foam insert inside the wheel


- Everything should be level across all those surfaces.
- Install the trunk mats and you're done!



You lose about 4 inches of depth. A good way to judge this is notice how the front bump between the trunk floor and the back seat is now level with the trunk mat. Also after driving around this way, the spare wheel has not budged at all. It is very secure.

One last note, is that the mats are a little tight lifting / lowering across the cargo net rings. Technically, the spare trunk has a different rear trim piece that locates those rings differently. However, my net is still fully functional and just takes a little manipulation to lift the mats over the rings.

Hope this helps!
 

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Great write up! Thanks for posting such detailed pics as well.
 

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on that salvage yard site, i assume you use "spare tire carrier" as the part option? It says nothing found, but i submitted a search request. hopefully someone comes back to me with the parts i need.

thanks for the help man!
 

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Discussion Starter #5
on that salvage yard site, i assume you use "spare tire carrier" as the part option? It says nothing found, but i submitted a search request. hopefully someone comes back to me with the parts i need.

thanks for the help man!
No, choose "wheel". Then on the next page you'll be able to select the "compact spare". Then it will take you to a TON of listings. Keep in mind due to the spare tire/wheel size you'll see lots of other infiniti vehicles. You can scroll down until you get to the Q50's if you are looking for more of the trunk parts.
 

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Discussion Starter #7
great info. so where did you get the rubber pads from, if i may ask?
They came from the same car and salvage yard where I got the rest of the parts. I happen to see them in the picture the salvage yard guy sent me of the trunk so I asked him to remove those and throw them in. He had to break the adhesive to get them off but there was enough adhesive remaining that they are sticking well in my car.
 

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They came from the same car and salvage yard where I got the rest of the parts. I happen to see them in the picture the salvage yard guy sent me of the trunk so I asked him to remove those and throw them in. He had to break the adhesive to get them off but there was enough adhesive remaining that they are sticking well in my car.
Okay...sounds like i can improvise my own. thx!
 

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do you own a silver sport or a red sport? is the bolt pattern the same for rs400 staggered rears as it is for the front and every spare wheel ever made for the q50 since MY2014?

have you noticed any change in driving dynamics since adding this to your vehicle?
 

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Discussion Starter #10 (Edited)
do you own a silver sport or a red sport? is the bolt pattern the same for rs400 staggered rears as it is for the front and every spare wheel ever made for the q50 since MY2014?

have you noticed any change in driving dynamics since adding this to your vehicle?
I own a silver sport. My understanding is that the spare tire is the same for all Q50 models. Staggered or not makes no difference for the spare tire. I haven't noticed any difference in driving dynamics. You're basically adding probably 30ish pounds to the trunk with all the parts. So it is basically a minor weight penalty. However, my understanding is that non-RF tires are lighter than RF tires, so it may wash out in the end.

Good luck!
 

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I purchased a new 2017 Q50S at the end of March. It did not come with the spare tire. In fact, Infiniti has gone so far as to almost eliminate that as an option
Clean and thorough install! Kudos and Congratulations on the new car.

It seems to be the trend many manufacturers who use run on flat tires are taking. I can't say I agree completely...but I also believe spare tires offer most people false hope. Most people never inspect their pressure level meaning they usually only have 1/6 of the pressure needed to safely operate after a few years in the trunk. Many people could not quickly locate and use the supplied jack and lug nut wrench in a safe manner. I think overall having tires you can safely operate for a little while on is overall beneficial to the group of people who can't/won't/will not change their own tire.


do you own a silver sport or a red sport? is the bolt pattern the same for rs400 staggered rears as it is for the front and every spare wheel ever made for the q50 since MY2014?

have you noticed any change in driving dynamics since adding this to your vehicle?
If you ensure you purchase a rim from a sport model Q50 or Q60 you should be fine. The bolt pattern is the same for almost all 5 lug Nissan/Infiniti products use a 5x4.5/114.3 bolt pattern, and the calipers look like the same ones they've been using for a while.
I wonder if the increased weight could be offset by ditching the run flat tires when it comes time for replacement.
 

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Parts You'll Need
7. Felt Blanket for Trunk with Spare
8. Cross Bar (recommended but not required)
9. 4 Thick Adhesive Rubber Pads (with single white lines on them)
10. Trunk Mat for Trunk with Spare
should each of the above parts be present on a salvaged q50 with intact trunk and spare? i'm guessing trunk mat that came with your vehicle was incapable of being placed over the spare?
 

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Discussion Starter #13
should each of the above parts be present on a salvaged q50 with intact trunk and spare? i'm guessing trunk mat that came with your vehicle was incapable of being placed over the spare?
Yes, all of those parts should be present from a salvage Q50 with an undamaged trunk with spare. The existing trunk mat you have would not fit well, so I would just get the salvage yard to include the mat from the car you are buying the parts off of.
 

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If you ensure you purchase a rim from a sport model Q50 or Q60 you should be fine. The bolt pattern is the same for almost all 5 lug Nissan/Infiniti products use a 5x4.5/114.3 bolt pattern, and the calipers look like the same ones they've been using for a while.
I wonder if the increased weight could be offset by ditching the run flat tires when it comes time for replacement.
I saved about 4lbs each corner when i switched to regular tires. And I think for those folks who replaced their stock muffler and/or rims saved even more.
 

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Discussion Starter #15
Looks like my pictures for this process started showing again. I have no idea why and was actually in the process of trying to find an alternative to Photobucket, but lets enjoy it while it lasts!
 

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Looks like my pictures for this process started showing again. I have no idea why and was actually in the process of trying to find an alternative to Photobucket, but lets enjoy it while it lasts!
And they are gone again... any chance of getting like a .pdf or something with the pics?

Just got the spare ordered and the tools/ Jack, and was going to rig the rest...
 

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You can order a Red Sport AWD with the spare kit. It is just a special order. The spares as mentioned are expensive.
 

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You can order a Red Sport AWD with the spare kit. It is just a special order. The spares as mentioned are expensive.
I got a used spare and tool kit, I was just wanting to see the pics for the retrofit that he did. There were some pads, etc that he placed, and I was curious about.
 

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Looks like my pictures for this process started showing again. I have no idea why and was actually in the process of trying to find an alternative to Photobucket, but lets enjoy it while it lasts!
And they are gone again... any chance of getting like a .pdf or something with the pics?

Just got the spare ordered and the tools/ Jack, and was going to rig the rest...
This photo might help. I bought the tire, tools and trims in ebay. Bought the all weather mat and rubber pads from dealer. Total cost ~500
 

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