Fifth Wheel
Forest River RV Cardinal 3515-rt
Compare specs across all model years (2009–2011)
3
Model Years
6
Sleeps
39' 10"
Length
15,922
Avg GVWR
Our Recommendation
Which Year Should You Buy?
2010 Cardinal 3515-rt
Best Choice
Lightest GVWR (15,815 lbs) makes it towable by more vehicles. Highest Mint Score (30.9).
What Changed Year-Over-Year
2009
2010
Weight Reduction
GVWR dropped from 16,135 to 15,815 lbs (320 lbs lighter), improving towability.
All Model Years
2011
2011 Forest River RV Cardinal 3515-rt
29.9
15,815 lbs GVWR
2,135 lbs Hitch
39' 10"
Sleeps 6
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Check Towing
Best Value
2010
2010 Forest River RV Cardinal 3515-rt
30.9
15,815 lbs GVWR
2,135 lbs Hitch
39' 10"
Sleeps 6
↓ 320 lbs lighter than 2009
View Full Specs
Check Towing
2009
2009 Forest River RV Cardinal 3515-rt
30.2
16,135 lbs GVWR
2,135 lbs Hitch
39' 10"
Sleeps 6
Original model year
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Check Towing
Can Your Vehicle Tow the Cardinal 3515-rt?
Enter your truck specs to see if any of these model years fit your towing capacity—and which year gives you the most safety margin.
Tip: Click a year to see the full specs, tow guidance, and recommended gear for that model year.
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