Spare Tire Caution and a Question about 18" Rims on a V8

[lobsenza]

I just wanted to caution everyone. I removed my temporary spare from the trunk to check the tire pressure and found part of the tread pealing off. This tire had never been on the car. I am going to call the dealer and Discount Tire about this tomorrow. I assume it is covered by warranty, but I am not positive about it. My Genesis is 3.5 years old with 25,000 miles on it. I do have the Hyundai HPP, but I don't think that matters.

Will the 18" rim from the V6 fit on the V8? I cm concerned about front brake caliper clearance. I would love to have a full size spare and think it will fit below the floor. I would be fine with an 18" rim as long as it clears the brakes (the tire will have a higher sidewall to make the diameter the same). Anyone know for sure if a full size spare will fit in the trunk below the floor?

If anyone knows of a used rim I could use for a full size spare, please let me know. Cosmetic damage is OK.

 

[EdP]

Tires are covered by their own warranty, usually not very long, usually pro rated. Given the age, they may give you enough for a cup of coffee.

 

[jimmy buoy]

Here's my experience...

I've had a set if 18" rims with winter tires off a 2009 Genesis that I've used on my 2009 V6, 2012 R-Spec 5.0, and now with my 2015 5.0 V8 - I DID have a clearance problem with the front callipers on the current 2015. It was very close, so I bought a pair of 1/4" spacer plates which provide enough clearance without creating any problems (as far as I know).

 

[lobsenza]

Do the spacer plates make the lug nuts shorter? Can you provide a link to the space plate?

Now all I need is to fina a used 18" rim.

 

[jimmy buoy]

Yes, it does have less thread grabbing the stud, but it seems to be enough and torques down just fine. The spacer was a White Knight product from our local Canadian Tire store.

 

[lobsenza]

I went to the dealership today. They agreed the tire was defective. They took the mini spare from one of their loaner G80s and gave it to me and ordered a new one for the loaner car.

I also called Discount Tire. They could give me a 19" rim with a nonmatching new tire for $280 out the door. The full size spare would fit in the trunk, but the jack holder would have to be modified. I like the idea of a full size spare and am very tempted by this. What are your thoughts?

I am very happy how quickly the dealership (Round Rock Hyundai) solved this issue.

 

[Ragnar]

A full size spare is always preferred to a donut spare....

 

[EdP]

A full size spare is always preferred to a donut spare....

True, but any spare is preferable to the can of air that many cars have today. Not often I had to put on a spare but I still want one. About 7 years ago I gashed a sidewall on a rainy December night after tire stores were closed. The Hyundai/Genesis roadside service is pretty good. Needed it twice, once 20 miles from home, the other 400 miles from home.

 

[Mark_888]

A full size spare is always preferred to a donut spare....

Correct. One reason for this is that a donut spare is specified to be filled at 60 PSI, versus mid-30's for a regular tire. But even if the donut spare is filled to 60 PSI it will usually lose a lot of pressure in just a few months, even when not being used. The first time I had to use my donut due to a flat during a long trip, I found out that it only had 30 PSI.

 

[jimmy buoy]

I keep a lighter plug powered little air compressor in the trunk for just that reason. Didn't help when I had two flats at the same time though...

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[Mark_888]

I keep a lighter plug powered little air compressor in the trunk for just that reason. Didn't help when I had two flats at the same time though...

Plus, it is not easy for one of those to fill a tire to 60 PSI. I am not saying they all can't do it, but I wouldn't bet that some of them cannot.

 

[lobsenza]

I ended up buying the full size spare. It fits below the floor, but barely. I had to modify the styrafoam that holds the jack tools so it would fit inside the full size rim. I am much more comfortable with a full size spare.

 

[inmanlanier]

Lobsenza, I did exactly what you did for my 2009. I didn't have to use it much, but we traveled from Fl to NC frequently and didn't want to have to find a new tire when out and about. I'm sure if I didn't have it in the trunk, I would have been with blown tires multiple times . Now I'm thinking the same for the 2015 we just acquired. Can you share with me who's wheel you got? 19" I assume?

 

[tuckerdog1]

I ended up buying the full size spare. It fits below the floor, but barely. I had to modify the styrafoam that holds the jack tools so it would fit inside the full size rim. I am much more comfortable with a full size spare.

Lobsenza,
Any chance you could post some pics. I've also kicked this idea around.

Thanks

 

[Aquineas]

Wow A. that sucks. FYI I too replaced my donut spare with a full-sized spare. The floor in the trunk raises up a bit, but it's not unmanageable.

 

[inmanlanier]

Well, Murphy caught up with me - yesterday a wheel stepped off the inside edge of the road on twisties up in NC and my front right Continental blew! What a pain. Had to put the spare on in the rain. FOR ALL - beware - the spare they give you is a pain to raise the car. You can only move the screw jack one half revolution each motion of the handle. Takes forever to jack up and down. Now I've had to order a tire to be shipped to us since we're away in a rural area. Arghh. I wish I had the full sized spare.

 

[EdP]

Well, Murphy caught up with me - yesterday a wheel stepped off the inside edge of the road on twisties up in NC and my front right Continental blew! What a pain. Had to put the spare on in the rain. FOR ALL - beware - the spare they give you is a pain to raise the car. You can only move the screw jack one half revolution each motion of the handle. Takes forever to jack up and down. Now I've had to order a tire to be shipped to us since we're away in a rural area. Arghh. I wish I had the full sized spare.

How old is your car? You get 5 years roadside service. You may have to wait a bit though. Took about 30 minutes one time, 45 another, but I did not get wet in the rain.

 

[inmanlanier]

It's a 2015. Right now we are in the mountains of SW North Carolina. Naturally the tire blew on HWY 64 in a spot that had no cell service, so the system didn't have access nor did our phones. My wife was reticent to go hiking to get reception - besides towards the end the rain started coming down and I was very appreciative of her holding the large umbrella. Fortunately there we were just out of the local town with a side road and a driveway I got to quickly to change the tire. I've changed enough tires in my life it's no big deal - just a pain with the rinky-dink jack. I just now read the manual and had not noted the slot in the lug wrench that would have sped things up a little. My guess is that we were done in 25 minutes.

 

[lobsenza]

What would you like pictures of? The styrafoam?

 

[Milano]

Correct. One reason for this is that a donut spare is specified to be filled at 60 PSI, versus mid-30's for a regular tire. But even if the donut spare is filled to 60 PSI it will usually lose a lot of pressure in just a few months, even when not being used. The first time I had to use my donut due to a flat during a long trip, I found out that it only had 30 PSI.

That happens very often. I suggest to people that they have their spare checked for air at least every other oil change. I feel like it's one of those courtesy things like checking oil at a gas station fill up that don't happen anymore unless you ask.