my spare tire solution, sort of
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 9 of 9
2009-2014 Cadillac CTS-V General Discussion Discussion, my spare tire solution, sort of in Cadillac CTS-V Series Forum - 2009-2014; So, they say the thrill is in the chase ... so , I was not content with the very expensive ...
  1. #1
    JKG
    JKG is offline Cadillac Owners Fanatic
    Join Date
    Apr 2004
    Posts
    173

    my spare tire solution, sort of

    So, they say the thrill is in the chase ... so , I was not content with the very expensive spare tire kits that are out there, and I can not find an appropriate spare tire from a junked car, because it seems all the local junkyards not have very late model cars.
    So, I did a lot of measuring, and then ordered a dr37 wheel in 18x8 (5x120 bolt pattern), and the cheapest 215/45/18 tire they had - a total of $240 mounted, balanced and shipped to me. This combo gives a tire diameter of 25.6", which is just the tiniest bit taller than the spare tire kits others have gotten. The stock tire diameter is just about 27".
    As you can see in this picture of the spare next to the stock front tire on the car, there is almost an inch difference in height.

    If I was to use this spare, I would only put it on the front. not sure how the limited slip works in the rear diff, but i would prefer not to find out.
    this wheel does bolt right on to the stock hub, no spacer required, but I think will need narrower lug nuts.
    Attached Images

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    JKG
    JKG is offline Cadillac Owners Fanatic
    Join Date
    Apr 2004
    Posts
    173

    Re: my spare tire solution, sort of

    It also fits in the rear spare tub, but not as well as my measurements said it would. if i deflate it, then it mostly fits. it sits up a bit. I can not put the tire cover back in place, but I can fold the folding floor of the wagon back down. I plan to put it upside down in the well, and put the inflater in the wheel, along with a wrench and the appropriate lug nuts. Also need to get a jack, but scissor jacks are a dime a dozen anywhere. If the tire is not deflated, it sits up a little higher, but the floor still goes down.

    Overall, I think this will work as well as the spare donut tire that is out there, and no spacer needed, so that much less aggravation when actually changing the tire in my suit on the way to work. But I have to get lug nuts (which will come for free when I buy winter wheels) and a jack. In the end, i have saved a couple bucks, although for $350 you can get the whole package from performancespare.com, and that guy did seem very nice.
    Attached Images

  4. #3
    JKG
    JKG is offline Cadillac Owners Fanatic
    Join Date
    Apr 2004
    Posts
    173

    Re: my spare tire solution, sort of

    If i remove the plastic spare tire interior panel, I bet the tire would fall all the way in, but I dont mind it sitting up a bit for now. still figuring it out. i also have to find a spot to mount my sub amp down there (another post in a few days)

  5. #4
    Random84's Avatar
    Random84 is offline Cadillac Owners Enthusiast
    Automobile(s): Founder, OBWC
    Join Date
    Feb 2013
    Location
    Ohio
    Posts
    559

    Re: my spare tire solution, sort of

    very cool - thanks for posting.

    It should mount on the rears, you just don't want to drive on it, correct? IMHO, since it's an emergency measure (to get to a tire shop, or home), you could obviously drive appropriately as you would with any other spare on the rear - or is there some other reason you're thinking it wouldn't work on the rears?

  6. #5
    JKG
    JKG is offline Cadillac Owners Fanatic
    Join Date
    Apr 2004
    Posts
    173

    Re: my spare tire solution, sort of

    i am sure it will fit fine on the rear, but the diameter is different, and with a mechanical locking rear diff, it might wear the differential. i am not sure how this diff works - if it is locking at all...

  7. #6
    vagondr is offline Cadillac Owners Fanatic
    Automobile(s): '13 CTS-V wagon WD graphite 6MT Corsa Sports
    Join Date
    Sep 2012
    Location
    central NJ
    Age
    70
    Posts
    147

    Re: my spare tire solution, sort of

    If you completely disable traction control could you safely mount it on the rear?

  8. #7
    Big Jay is offline Cadillac Owners Member
    Join Date
    Aug 2003
    Posts
    80

    Re: my spare tire solution, sort of

    What do you mean "completely disable TC"? Is that just turning it off on the steering wheel?

  9. #8
    taken is offline Cadillac Owners Fanatic
    Automobile(s): 2013 CTS V
    Join Date
    Jun 2011
    Age
    40
    Posts
    204

    Re: my spare tire solution, sort of

    I wonder if a 215/40/18 would be just smaller enough to fit all the way down in the tub? Tire Rack has a cheap Kumho for $119.

  10. #9
    JKG
    JKG is offline Cadillac Owners Fanatic
    Join Date
    Apr 2004
    Posts
    173

    Re: my spare tire solution, sort of

    i bet a 215/40/18 would fit all the way down, since it only needs a millimeter or two. but tire rack does not have any cheap wheels that we are sure will fit. the deal is buying the inexpensive dr37 plus $87 tire from discount tire, who mounts and ships for free. And given that the tire is already smaller diameter than the stock, I would prefer to keep as much height as possible.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting