GLC300 Spare Tire Options
#51
Hello all,
I have a 2017 GLC300 whose original run-flats are now worn at 18000 miles (US based, so no spare is available). Been reading these forums to solve my "spare problem" for the past year and was about to go purchase the donut as recommended by others above. Definitely do not want run-flats again !!
However, in a Google search yesterday, I came across a company called Modern Spare (modernspare.com), located in Colorado who have designed donut spares for many run-flat type vehicles. I got in touch with them and they stated that they have a spare for the GLC300, as well. One can configure a spare for the GLC300 on their website. The wheel is designed to handle large brakes also. Approx. $350 + $45 shipping includes wheel/tire, nuts, jack, wrench, cover etc.
Have any of you bought this spare ? Or heard of this company (are they legit) ? Thank you.
I have a 2017 GLC300 whose original run-flats are now worn at 18000 miles (US based, so no spare is available). Been reading these forums to solve my "spare problem" for the past year and was about to go purchase the donut as recommended by others above. Definitely do not want run-flats again !!
However, in a Google search yesterday, I came across a company called Modern Spare (modernspare.com), located in Colorado who have designed donut spares for many run-flat type vehicles. I got in touch with them and they stated that they have a spare for the GLC300, as well. One can configure a spare for the GLC300 on their website. The wheel is designed to handle large brakes also. Approx. $350 + $45 shipping includes wheel/tire, nuts, jack, wrench, cover etc.
Have any of you bought this spare ? Or heard of this company (are they legit) ? Thank you.
Last edited by shsabh6; 08-05-2020 at 01:34 PM.
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mikapen (09-16-2020)
#52
Super Member
Hi I bought the modern spare, and have a 2017 in the US. Fits neatly underneath. I bought the whole kit, but it won't fit underneath with the cover on.
They shipped pretty quickly, I had a couple questions via email for customer service and they responded quickly. Its a nice looking unit overall, i am very happy with the purchase, now i just have to figure out what non RFT tires to buy.
They shipped pretty quickly, I had a couple questions via email for customer service and they responded quickly. Its a nice looking unit overall, i am very happy with the purchase, now i just have to figure out what non RFT tires to buy.
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Bayside2000 (07-11-2023),
will4iron (10-01-2022)
#54
Glad it worked out for you... I was trying to save a few bucks going with the used retro fit spare tire package... I think your option removes all dought about the caliper clearance issues.. My main concern was having it fit in the cargo bay with lid closed.... I had no issues
with that with the MB rim.... Good luck in your non RF tire section. I'll be doing the same research....
with that with the MB rim.... Good luck in your non RF tire section. I'll be doing the same research....
#56
MBWorld Fanatic!
#57
Super Member
Same here with the modernspare unit. I had to push down a bit and the top is a little smashed but it doesn't touch any of the fuses or the plastic trim around them. When i did mockups with books to 6" it definitely seemed to first worse than it actually did with the tire, maybe because the little bit of curvature around the tire helps.
tire installed on 2017 US GLC300
Fuse box that sits underneath modernspare tire
tire installed on 2017 US GLC300
Fuse box that sits underneath modernspare tire
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will4iron (10-01-2022)
#58
Super Member
BTW - after much research I ordered a set of Michelin CrossClimate2 which are en route to Costco, so probably in a couple of weeks I will post some thoughts on the spare tire thread
#60
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Gullikson (09-14-2020)
#64
Man those have a funky tread design.. Not sure which ones 'll be getting,, but here in Pa. (us) I need a good all weather tire. I'm still leaning toward Bridgestone Ecopia. costco.
#65
do I need different lug bolts for the new spare wheel?
I am converting our 2018 GLC300 SUV from run-flat tires (Pirellis worn out at 20K miles!) to non-run-flat, so I have purchased a kit with jack and lug wrench, and the Mercedes-Benz GLK350 17x6 Spare Wheel Rim Vredestein Tire OEM ( 362079764662 ).
Do I need different lug bolts than the ones currently holding the wheels on the car?
I thought I saw somewhere about shorter lug bolts for the spare wheel... Is this for convenience, or required?
Thanks!
Do I need different lug bolts than the ones currently holding the wheels on the car?
I thought I saw somewhere about shorter lug bolts for the spare wheel... Is this for convenience, or required?
Thanks!
#66
I am converting our 2018 GLC300 SUV from run-flat tires (Pirellis worn out at 20K miles!) to non-run-flat, so I have purchased a kit with jack and lug wrench, and the Mercedes-Benz GLK350 17x6 Spare Wheel Rim Vredestein Tire OEM ( 362079764662 ).
Do I need different lug bolts than the ones currently holding the wheels on the car?
I thought I saw somewhere about shorter lug bolts for the spare wheel... Is this for convenience, or required?
Thanks!
Do I need different lug bolts than the ones currently holding the wheels on the car?
I thought I saw somewhere about shorter lug bolts for the spare wheel... Is this for convenience, or required?
Thanks!
you're going to need the shorter lug bolts for your spare rim the the STEEL version... if it's a regular mag wheel the same as your other 4 then you can use the factory lug bolts.. If the factory lugs use on steel rim they are too long and will bottom out against the rotors
the shorter lug bolts should be available on Ebay
Good Luck welcome to the Non Run flats club..
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seamus2154 (12-03-2020)
#67
Senior Member
Join Date: Jan 2019
Location: Palm Beach, Fl
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2016 S550 sport, 2018 GLC300, M3, Zo7, 2021 Sierra Denali
Bill
you're going to need the shorter lug bolts for your spare rim the the STEEL version... if it's a regular mag wheel the same as your other 4 then you can use the factory lug bolts.. If the factory lugs use on steel rim they are too long and will bottom out against the rotors
the shorter lug bolts should be available on Ebay
Good Luck welcome to the Non Run flats club..
you're going to need the shorter lug bolts for your spare rim the the STEEL version... if it's a regular mag wheel the same as your other 4 then you can use the factory lug bolts.. If the factory lugs use on steel rim they are too long and will bottom out against the rotors
the shorter lug bolts should be available on Ebay
Good Luck welcome to the Non Run flats club..
Suggestion: Anyone going this route needs to do a trial run with their new equipment. Correct spare tire pressure (60psi) in my case, use jack (make sure it is correct for application), install lug bolts, use lug wrench . Move car and make sure there are no obstructions or lug bolts hitting rotor. On the side of the road at the worst time is no time to find out you missed something or have an issue.
#68
thanks!
Thanks for the replies - very helpful!
I have put in an offer on a set of the short lug bolts on eBay... the non-run-flats are not yet installed, so I have a little time.
I like the idea of doing a trial wheel change in the comfort of my garage... rather than on the side of the highway...! Makes me think of Leon Russell, "Sitting on the highway in a broken van/Thinking of you again..."
I have put in an offer on a set of the short lug bolts on eBay... the non-run-flats are not yet installed, so I have a little time.
I like the idea of doing a trial wheel change in the comfort of my garage... rather than on the side of the highway...! Makes me think of Leon Russell, "Sitting on the highway in a broken van/Thinking of you again..."
The following 2 users liked this post by billb8737:
BrianA. (07-16-2023),
seamus2154 (12-04-2020)
#69
Senior Member
Just bought a Mercedes Jack kit and ML350 spare tire. The 155/90/18 does interfere with the fuse box housing but does not make contact with any of the components under the housing area. Good to have a spare, now for regular tires.
#70
Hi I bought the modern spare, and have a 2017 in the US. Fits neatly underneath. I bought the whole kit, but it won't fit underneath with the cover on.
They shipped pretty quickly, I had a couple questions via email for customer service and they responded quickly. Its a nice looking unit overall, i am very happy with the purchase, now i just have to figure out what non RFT tires to buy.
They shipped pretty quickly, I had a couple questions via email for customer service and they responded quickly. Its a nice looking unit overall, i am very happy with the purchase, now i just have to figure out what non RFT tires to buy.
#71
MBWorld Fanatic!
Join Date: Mar 2016
Location: Melbourne, Australia
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2016 GLC 250d AMG pack, 2017 GLC Coupe 250d AMG pack , 2002 BMW 330Ci convertible, 2021 BMX X1 sD20i
Notice of Warning for all the second hand spare tire from earlier MB models for your GLC.
Check the date of manuf of your spare tyre, usually 4 numbers, like 4412. Translates into week 44 of 2012.
Tyres should be replaced after 7 years - they do degrade and can delaminate. Makes no real difference that they are in a cool, dark hole in the trunk !!!!
Good luck.
Also if buying new tires, spare the throttle for the first 500km as they have a silicon release agent on the outside to assist extraction from the manuf press - 500km allows silicon type coating to be scrubbed off tyre and then they are good to perform. No point suffering extended stopping or loosing control through tires ‘letting go’ on road surface when turning.
Check the date of manuf of your spare tyre, usually 4 numbers, like 4412. Translates into week 44 of 2012.
Tyres should be replaced after 7 years - they do degrade and can delaminate. Makes no real difference that they are in a cool, dark hole in the trunk !!!!
Good luck.
Also if buying new tires, spare the throttle for the first 500km as they have a silicon release agent on the outside to assist extraction from the manuf press - 500km allows silicon type coating to be scrubbed off tyre and then they are good to perform. No point suffering extended stopping or loosing control through tires ‘letting go’ on road surface when turning.
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mikapen (07-10-2021)
#72
I have a 2019 GLC300 base model. Thanks for all the information on using standard tires! I bought a set of Michelin Defenders and the car rides so much better. Bought a spare kit from Modern Spare after reading posts here. Fits in the trunk over the top of the fuse box perfectly and floor of the trunk latches just fine!
#74
Junior Member
Hi All,
Thank you all who provide feedback, because of all of you, I was able to get all and its does look good, so now is my turn to provide the feedback.
It does fit under the lid with other junk no issues.
Here is my setup,
Spare tire
Attachment 425716
MB Vehicle Tool Kit
Part #1665806900
GSPSCN Portable Air Compressor Pump Dual Cylinder Heavy Duty Tire Inflator with LED Light,150 PSI 12V Air Pump with Tire Repair Kit and Toolbox for Auto,SUV,Truck Tires etc https://
http://www.amazon.com/dp/B07GJND1PX/..._Ke4-EbTTG2C3M
Some pictures
Attachment 1
Attachment 425720
Attachment 425722
Attachment 425718
Attachment 425719
Attachment 425726
Attachment 425724
Attachment 425723
Attachment 425725
Thank you all who provide feedback, because of all of you, I was able to get all and its does look good, so now is my turn to provide the feedback.
It does fit under the lid with other junk no issues.
Here is my setup,
Spare tire
Attachment 425716
MB Vehicle Tool Kit
Part #1665806900
GSPSCN Portable Air Compressor Pump Dual Cylinder Heavy Duty Tire Inflator with LED Light,150 PSI 12V Air Pump with Tire Repair Kit and Toolbox for Auto,SUV,Truck Tires etc https://
http://www.amazon.com/dp/B07GJND1PX/..._Ke4-EbTTG2C3M
Some pictures
Attachment 1
Attachment 425720
Attachment 425722
Attachment 425718
Attachment 425719
Attachment 425726
Attachment 425724
Attachment 425723
Attachment 425725
California car.
Thank you for any help.
Last edited by SuperTuscan; 12-12-2021 at 10:03 PM.
#75
Junior Member
Rim and tire pics of spare (19")
Sharing these pics of the spare donut on a 19" 2021 GLC300. My 2020 was in for routine repair at the dealer in Los Angeles, and this donut was under the rear lid on the loaner car.
I need a spare (as noted in my reply to DanD. under this thread) for my 2020 18". What are the part numbers or what part would work. The dealer said there's no part for the 2020. Part numbers please.
I need a spare (as noted in my reply to DanD. under this thread) for my 2020 18". What are the part numbers or what part would work. The dealer said there's no part for the 2020. Part numbers please.