Troubleshooting Included Bolts Too Big to Install Trailer Hitch on Vehicle
Question:
I just purchased a hitch from you guys and it came with M12 1.25 bolts for mounting to the frame. While attempting to mount the hitch using these bolts, they seem to be to wide. Does my car sometimes use M10 1.25? I feel this would be the correct size? Hoping you can help me through this. Thank you,
asked by: Christopher D
Expert Reply:
The issue you described in your question is actually not too uncommon, especially on vehicles that have seen a few winters. I did verify that the M12 x 1.25 bolts are the correct size for installing the Curt Trailer Hitch # C11265 on your 2015 Toyota Corolla. Since the underside of your vehicle is constantly exposed to dirt, grime, moisture, salt, etc - this gunk can find its way into the open weld nuts or bolt holes on the vehicle where the included hardware for a trailer hitch is attached. This grime hardens over time, causing rust and corrosion that can make the bolts seem too big for the weld nuts when it's time to install a hitch.
What you can do is try spraying the bolt hole with a lubricant like WD-40 and then let it sit for a couple minutes so that it can penetrate and soften the grime. Then scrub the bolt hole with a wire brush like # 814092, rigorously running the brush in and out of the hole. You may need to repeat these steps a few times depending on the amount of build up. This should hopefully clean it out enough to start threading the bolts in.
I have also attached a great article on exactly this subject that you can look through. Please just let me know if you still have problems installing the hitch and I will be happy to look into this further.
Products Referenced in This Question
- Accessories and Parts
- Fifth Wheel Installation Kit
- Gooseneck Installation Kit
- Trailer Hitch
- Tools
- Tube Brush
- 1/2 Inch
- Flint Hill Goods
more information >
Curt Trailer Hitch Receiver - Custom Fit - Class I - 1-1/4"
- Trailer Hitch
- Custom Fit Hitch
- Class I
- 200 lbs TW
- 2000 lbs GTW
- 1-1/4 Inch Hitch
- Visible Cross Tube
- CURT
more information >
Product Page this Question was Asked From
Draw-Tite Sportframe Trailer Hitch Receiver - Custom Fit - Class I - 1-1/4"
- Trailer Hitch
- Custom Fit Hitch
- Class I
- 200 lbs TW
- 2000 lbs GTW
- 1-1/4 Inch Hitch
- Visible Cross Tube
- Draw-Tite
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Trailer Hitch
- Shop: Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Shop: etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2"
- Shop: Trailer Wiring
- Q&A: Does the Curt C13381 Include Mounting Bolts for a 2021 VW Tiguan
- Q&A: Are 5 Bolts Enough to Safely Install Curt Trailer Hitch 13364 on a 2014 Chrysler Town and Country
- Shop: Brake Controller
- Shop: Curt Echo Wireless Brake Controller - 7-Way Plug Mount w/ Bluetooth App - 1 to 2 Axle - Proportional
- Q&A: Troubleshooting Bolts Not Fitting When Installing Draw-Tite Trailer Hitch on a 2008 Nissan Rogue
- Q&A: Is Bumper Beam Modification Needed to Install Draw Tite Hitch part # 76025
- Video: Curt T-Connector Vehicle Wiring Harness Installation - 2019 Honda Odyssey
- Video: Draw-Tite Max-Frame Trailer Hitch Installation - 2021 Honda Odyssey
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Q&A: Tap Size Needed to Clean Weld Nuts on 2019 Honda Pilot for Hitch Install
- Search Results: installation hitch hardware kit
- Shop: Replacement Hardware Kit for EcoHitch Trailer Hitch
- Shop: Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Q&A: Wiring a Camper Shell Third Brake Light on a 2017 Chevrolet Silverado
- Search Results: 44649
- Shop: 7- and 4-Pole Trailer Connector Socket w/ Mounting Bracket - Vehicle End
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: Choosing the Right Trailer Wiring
- Video: Choosing the Right Brake Controller
- Article: How to Choose the Right Trailer Hitch Class
- Search Results: 68149
- Q&A: 10k Dexter Replacement Hub for a 8-415
- Article: Trailer Wiring Diagrams
- Search Results: 25580
- Search Results: dust caps
- Shop: Suspension Enhancement
on Trailer Hitch
