CURT Class 3 receiver
CURT
- Class III
- 2-inch
Cars and bikes calculator
Trailer tongue-weight planner
Towers matching tongue weight to a hitch. The decision this page isolates is narrow on purpose: translate trailer weight into a tongue-weight class. Weight, class, and fitment have to match the vehicle before a feature list matters.
This page produces an explainable category or size so options can be compared without a product ranking. The calculator does not rank CURT and B&W Trailer Hitches. It produces an explainable class so CURT Class 3 receiver, CURT Class 4 receiver, and B&W Companion fifth-wheel can be compared as examples of that class.
The working method is: Convert the inputs into a published planning class using the method on this page, then compare official product pages that match that class. Planning notes are grounded in SAE International. This page does not quote a price or rank a brand.
How to use this calculator
Towers matching tongue weight to a hitch. Translate trailer weight into a tongue-weight class. If you can answer trailer pounds, this page can produce a class you can shop against.
What this page will not do
- This page does not quote a price or rank a brand.
- Manufacturer specifications and program terms can change and must be verified on official pages.
- The result is a planning category, not a safety, medical, legal, or install guarantee.
Enter the planning inputs
Choose a hitch class by recording trailer pounds. Use real measurements or counts, not a rounded marketing number.
Keep optional extras off until they are real
This tool has no optional add-ons. If a number is uncertain, calculate a range and keep the more conservative class.
Read the planning class
Calculate class and treat the headline as a class, not a product name. Matching examples below follow class3, Starter, class4, Growth, Fifth, and Advanced.
Compare official pages, then verify
Open the official page for each example in that class. Confirm current specifications, dimensions, and terms. Decision Lantern does not quote a live price or complete an install review.
Planning classes on this page
- class3
- Example: CURT Class 3 receiver
- Starter
- Example: CURT Class 3 receiver
- class4
- Example: CURT Class 4 receiver
- Growth
- Example: CURT Class 4 receiver
- Fifth
- Example: B&W Companion fifth-wheel
- Advanced
- Example: B&W Companion fifth-wheel
Planning class
Class3
Compare options with at least:
- Compare official product pages in this class
- Specifications can change and must be verified
Example products for Trailer tongue-weight planner
Real products that fit this planning category. Specs come from the manufacturer’s product page. These are examples, not rankings. Product names that go to Amazon are associate links. Decision Lantern may earn a commission at no extra cost to you.
CURT Class 4 receiver
CURT
- Class IV
- Higher TW
B&W Companion fifth-wheel
B&W Trailer Hitches
- Fifth-wheel
- Gooseneck prep
Compare the official examples
The table below is a side-by-side of the official examples on this page. Columns are published facts—maker, planning class, and notes taken from the official page—not scores. CURT Class 3 receiver, CURT Class 4 receiver, and B&W Companion fifth-wheel are included so you can see how classes differ, then open the official page for the current specification.
| Example | Maker | Planning classes | Published notes | Official page |
|---|---|---|---|---|
| CURT Class 3 receiver | CURT | class3, Starter | Class III; 2-inch | CURT Class 3 receiver official page |
| CURT Class 4 receiver | CURT | class4, Growth | Class IV; Higher TW | CURT Class 4 receiver official page |
| B&W Companion fifth-wheel | B&W Trailer Hitches | Fifth, Advanced | Fifth-wheel; Gooseneck prep | B&W Companion fifth-wheel official page |
Which example fits which class
CURT Class 3 receiver
CURT
CURT Class 3 receiver from CURT is an example in the class3 and Starter class. Published notes on the official page include Class III and 2-inch. Keep it in the shortlist when your result lands in that class, then confirm the current specification before you buy.
CURT Class 4 receiver
CURT
CURT Class 4 receiver from CURT is an example in the class4 and Growth class. Published notes on the official page include Class IV and Higher TW. Keep it in the shortlist when your result lands in that class, then confirm the current specification before you buy.
B&W Companion fifth-wheel
B&W Trailer Hitches
B&W Companion fifth-wheel from B&W Trailer Hitches is an example in the Fifth and Advanced class. Published notes on the official page include Fifth-wheel and Gooseneck prep. Keep it in the shortlist when your result lands in that class, then confirm the current specification before you buy.
What to verify before you buy
- Confirm the current specification on the official product or plan page.
- Match the planning class to your measured inputs, not to a brand preference.
- This page does not quote a price or rank a brand.
- Manufacturer specifications and program terms can change and must be verified on official pages.
- Recheck this page after 2026-11-14 or sooner if a manufacturer changes a published rating.
How this estimate works
Convert the inputs into a published planning class using the method on this page, then compare official product pages that match that class.
Know the limits
- This page does not quote a price or rank a brand.
- Manufacturer specifications and program terms can change and must be verified on official pages.
- The result is a planning category, not a safety, medical, legal, or install guarantee.
Frequently asked questions
How does the trailer tongue-weight planner work?
It converts trailer pounds into a planning class using a published rule. Convert the inputs into a published planning class using the method on this page, then compare official product pages that match that class. The headline is a class such as class3, Starter, class4, Growth, Fifth, and Advanced, not a vendor ranking.
Is CURT Class 3 receiver better than CURT Class 4 receiver?
This page does not rank CURT Class 3 receiver, CURT Class 4 receiver, and B&W Companion fifth-wheel. CURT Class 3 receiver and CURT Class 4 receiver are listed because they are real products with official pages that map to different or overlapping classes. The useful question is which class matches your inputs.
Can I treat the result as a buying recommendation?
This page does not quote a price or rank a brand. Use the class to decide what to read next, then verify fit, terms, and installation requirements on the official page and with a qualified installer when the product needs one.
Do the product links earn Decision Lantern a commission?
Not on the current preview. Links go to official manufacturer or service pages. If compensated links are added later, the disclosure on this page will say so in plain language.
What should I verify after I get a class?
Confirm the current specification, dimensions or plan limits, and any program terms on the official page. Manufacturer specifications and program terms can change and must be verified on official pages. The next editorial review for this page is due 2026-11-14.
Why these 3 examples?
They are real cars and bikes options with an affiliate program on file and an official product page. CURT and B&W Trailer Hitches appear because each one can represent at least one planning class on this page, not because Decision Lantern tested or endorsed them.
Sources
- SAE hitch classes, SAE International. Retrieved .
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