How to Determine Wheel Stud Size for Disc Brake Kit for 2025 Brinkley with 7k Axles
Updated 04/08/2026 | Published 04/07/2026
Products Featured in This Question
Question:
I am looking to purchase a new disc brake package for my 2025 Brinkley with a 7K axle and the ask is to verify stud size. DO I need to pull the wheel off to do this or is it marked somewhere on my axle?
asked by: Scott K
Expert Reply:
Hey Scott, your 2025 Brinkley comes with Curt axles and while the tag info can be used to ID the stud diameter by getting the serial number to Curt it's not explicitly listed on the axle. It would be a matter of getting them the axle info and they'd be able to come back and tell you the stud info. Or you can look on the hub of the trailer for any identifying information and it could be determined through that. Or you could just pull a wheel off and measure one of them. There's also chance you could determine it by looking up the wheel info if you can find anything on the back of the wheel.
The DeeMax kit part # DE66AR has a 1/2 inch stud which is the most common but we also have a 9/16 inch part # DE57NR. Let me know which you have. The # DE57NR seems to have some pricing issues going on but I sent an update that is hopefully fixed by time you see this.
Product Page this Question was Asked From
DeeMaxx Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K
- Trailer Brakes
- Disc Brakes
- Marine Grade
- 8 on 6-1/2 Inch
- Hub and Rotor
- 1/2 Inch Studs
- 7000 lbs Axle
- 15 Inch Wheel
- 16 Inch Wheel
- 16-1/2 Inch Wheel
- 17 Inch Wheel
- 17-1/2 Inch Wheel
- DeeMaxx
more information >
Continue Researching
- Video: 2020 Grand Design Solitude Fifth Wheel DIY Install - DeeMaxx Disc Brake Kit with Actuator
- Shop: DeeMaxx Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K
- Search Results: disc brakes trailer brakes
- Shop: DeeMaxx Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Hub/Rotor - 8 on 6-1/2 - 7K
- Shop: B&W 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621HD - 25K GTW - 3.25K TW
- Search Results: offset goose ball
- Search Results: 10 inch offset gooseneck coupler
- Q&A: What Do I need to Convert a 2025 Brikley Z3100 5th Wheel to Disc Brakes?
- Shop: Hydrastar Disc Brake Conversion Kit for Tandem 7K Axles - 8 on 6-1/2 - 1/2" Studs
- Video: Setting Up the B&W 5th Wheel to Gooseneck Pin Box - 2017 Jayco Eagle Fifth Wheel
- Shop: DeeMaxx Disc Brake Kit w/ Actuator for Tandem Axle Trailers - 13" Rotor - 8 on 6-1/2 - 7K
- Shop: B&W 5th Wheel Setup w/ Replacement Gooseneck Pin Box - Lippert Rhino - 25K GTW - 3.25K TW
- Q&A: Suspension and Braking Upgrade Recommendation for 2025 Brinkley Z3400
- Search Results: lug nuts
- Search Results: accessories and parts
- Shop: DeeMaxx Disc Brakes - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coating - Grease - 8,000 lbs
- Search Results: morryde suspension kits
- Q&A: Disc Brake Kit Recommendation for 5th Wheel that has Tandem Lippert 7k Axles
- Video: DeeMaxx Disc Brakes | Expert Insights from the Manufacturer
- Video: Review of DeeMaxx Brake Actuator - Alpha Electric Over Hydraulic Actuator Disc Brake - DE24JR
- Search Results: disc brake kit
- Shop: Fifth Wheel Hitch
- Video: Feature Breakdown: Hydrastar Electric-Hydraulic Actuator w/ Line Kit for Disc Brakes
- Video: HydraStar Kit Installation - 2017 CrossRoads Cameo Fifth Wheel
- Q&A: Avilability Of a 7,000LB Disc Brake Kit With 1/2" Studs and Oil Bath Hub
- Video: Checking Out the Hydrastar Hydraulic Brake Line Kit
- Q&A: Disc Brakes for 2022 Vanleigh Beacon 41FLB
- Q&A: DeeMaxx Disc Brake Kit Recommendation for 7k Tandem Axles 9/16" Wheel Studs
- Q&A: Kit to Convert 7k Axles of 2024 Brinkley Z3100 to Electric Over Hydraulic Disc
- Shop: Vehicle Tow Bar Brake System
Jeff
4/8/2026
My Z-3100 came with 9/16" Studs. It's very easy to check the size that you have. Loosen the lug nuts just a little with the wheel on the ground. (They are torqued to 120 ft.lbs). Raise up the axel and wheel using the Brinkley hydraulic leveling system. Remove the Lugnuts and remove the wheel and tire. I find that using a prybar under the tire helps take the weight off the studs and makes wheel removal and installation easier. Next, take an adjustable wrench and use it as a caliper to measure the stud diameter. Snug the wrench around the stud, remove the wrench and measure the gap. It's that simple. Hope that this helps.