Why Would Trailer Hitch Install Cause Muffler Noise

Question

Question:

Ive installed the hitch for my Lexus RX 450h and now the muffler seems to rub against the hitch bar making my car sound like a muscle car. Any suggestions as to how to minimize this additional noise? Thank

asked by: Laura M

1

Helpful Expert Reply:

Exhaust rattling against a trailer hitch is a common occurrence but it is easily fixed. Exhaust pipes and mufflers hang on rubber isolators. The hangers can usually be manipulated to gain more clearance between the exhaust and the hitch. I have included a link below that covers the different fixes for this problem.

expert reply by: Jameson C

1

Answer 1

We do have a trailer hitch receiver that is a fit for your 2021 Lexus RX 450h, from Curt: - Curt Trailer Hitch Receiver #C73DR

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Answer 2

I have taken a look at the Draw-Tite Max-Frame Trailer Hitch Receiver item #75540. This hitch is confirmed to fit your 2022 Lexus RX 350 and it does require some minor trimming of the lower portion of the rear trim. I have linked a couple of pictures…

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Answer 3

We did have someone install the Draw-Tite Max-Frame Trailer Hitch Receiver #75540 on their 2022 Lexus RX 450h. While they did make it fit it did require them to do some additional trimming on the plastic shrouds under the vehicle and the exhaust was…

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Answer 4

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 5

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 6

I checked with several hitch manufacturers and there is not any kind of fit exception for their hitches on a 2016 Lexus RX 450h that features Laser Adaptive Cruise Control. All of the available hitches for this vehicle are confirmed to fit all…

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Answer 7

The receiver on the Hidden Hitch by Draw-Tite Trailer Hitch item #DT58GR has a locking knob that you turn to disconnect it from the rest of the hitch. I have linked a picture below that'll demonstrate it. This hitch is confirmed to fit the 2021…

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Answer 8

The Curt Trailer Hitch Receiver #C13282 fits all models of the 2019 Lexus RX 450h, including your F-Sport. The instructions don't go into as many details as they do with the Curt that fit the previous generation, but they do have a section…

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Answer 9

Starting with the trailer hitch for your 2018 Lexus RX 450h I recommend the Curt Class III Receiver Hitch #C13282 because it allows for an easier installation than the Draw-Tite model that is also available and is made right here in the USA. Unlike…

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Answer 10

When it comes to flat towing your 2019 Equinox there are a few items that will be similar to the items you saw already. The main difference would be the RoadMaster Baseplate #RM-523193-5. This baseplate is a direct fit for you vehicle. It is the…

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Answer 11

The 12V power circuit in an aftermarket 7-way connector like #37185 will usually be connected to the vehicle battery through a 40-amp circuit breaker like #PK54540. This installation provides for 12V power at the connector contact at all times, even…

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Answer 12

We have hitches that were specifically tested to fit the F-Sport models of the 2021 Lexus RX 350 like with the totally hidden Hidden Hitch part #DT58GR which has detachable lower hitch opening or the Draw Tite #75540 which only has the lower hitch…

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Why Would Trailer Hitch Install Cause Muffler Noise

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