can you drive a dually through the car wash

[SanDonovan]

Yes, you can drive a dually (a truck with dual rear wheels) through most modern, touchless automatic car washes, but it is not recommended for traditional brush or cloth-friction washes. The primary concern is the truck's width. A standard dually is about 8 feet wide, which exceeds the typical 7-foot width of many older or smaller car wash bays. Attempting to fit an oversized vehicle can lead to costly damage to both your truck's mirrors, fender flares, and the car wash equipment itself.

Before entering any car wash, your first step is to measure your truck's exact width and height, including any aftermarket accessories like roof racks or tow mirrors. Then, look for a "touchless" car wash. These bays are often larger and use high-pressure water and detergents instead of physical brushes, eliminating the risk of scratches or physical impact. Always fold in your tow mirrors if possible.

For the safest and most thorough clean, a manual wash is often the best choice. Using a self-service bay or a hand wash allows you to pay close attention to the unique areas of a dually, like the extended rear fenders and the space between the dual wheels where grime accumulates.

Here is a quick comparison of your options:

Washing Method	Recommended for Dually?	Key Considerations
Touchless Automatic	Yes, with caution	Measure truck width first. Ideal for quick, brush-free washes. May not clean heavily soiled wheels perfectly.
Brush/Friction Automatic	Generally No	High risk of damaging mirrors, antennas, and truck paint. Not designed for vehicles over 7 feet wide.
Self-Service Bay	Excellent	You control the pressure washer. Allows detailed cleaning of dual wheels and chassis.
Hand Wash (DIY or Pro)	Best Option	Safest and most effective method for preserving your truck's finish and ensuring a deep clean.

[StEmily]

I drive a Ram 3500 for my contracting business. I only use the big touchless washes on the highway. You gotta make sure the bay is labeled for large trucks. I always pull in dead slow and straight, and those mirrors get folded in every single time. It’s fine for a quick rinse, but nothing beats getting out the hose and brush on the weekend for a real clean.

[RicardoRose]

As an RV owner who tows with a dually, my main worry is clearance, not just width. I look for truck stops with dedicated commercial vehicle washes. They have higher ceilings and wider bays. I'd never risk a regular gas station car wash—it's just too tight a squeeze. The peace of mind is worth the extra few dollars to use a facility built for big rigs.

[LaSavannah]

It’s all about checking the specs. My husband’s F-350 is a beast, and we learned the hard way after a cloth wash left a scratch on the fender. Now we only go to places that explicitly list their bay dimensions online or on a sign. If it says anything less than 8.5 feet wide, we keep driving. A few minutes of research saves a huge repair bill.

[LeAvery]

From a detailing standpoint, automatic car washes are tough on any vehicle's clear coat, especially a large, expensive truck. While a touchless wash is the safest automated option, the harsh chemicals can be drying over time. For a dually, the best practice is a gentle hand wash with a pH-neutral shampoo. This protects the paint and lets you properly clean the brake dust from between those dual wheels, which automatic systems often miss completely.