Thread Tools Display Modes
Old 01-15-2016, 06:48 AM   #1
roadmaven's Avatar
Join Date: Feb 2015
Posts: 45
14" vs 15"

Last weekend we signed to buy a Shasta Oasis 18BH travel trailer. Specs are 21'9" long, dry weight around 3200 lbs, and tongue weight about 350lbs. GVWR is about 3850lbs. It's a single axle with 205-75-14 tires.

I went to the dealer last night to look over the two they have on the lot, as we bought at the Indy RV Expo, but I wasn't about to buy the one they had at the show due to wear and tear of a 9 day RV show. To my surprise, one of them had substantially more cargo capacity than the other: 546 lbs vs 1403 lbs. After further investigation, I found the one with the larger capacity had 225-75-15 tires on it, compared to the standard 205-75-14. I checked with my dealer about it, who contacted Shasta to see what was up. The answer is that Shasta makes another model called the Flyte, which has the same floorplans as the Oasis, but weighs a little more than the Oasis. With it weighing more, they went with a heavier axle on the single axle Flytes to give it more cargo capacity, and so they wouldn't have to carry two separate axle sizes, they decided to run the same axle on the Oasis. So this is a mid-production change, as the single axle Flyte floorplan has not yet hit the market, whereas the Oasis single axle floorplans have been out for a year.

So now I have a choice as to which to get: the 14" with 546 cargo capacity or the 15" with 1403 lbs cargo capacity. Obviously I'm leaning towards the 15" for the 900 lbs increase in capacity. The specs on a Flyte with the same floorplan as the Oasis I'm getting show a GVWR of 4681 lbs, so I'm assuming an Oasis with the larger axle should be close to that. Other than the 15s raising the overall height of the trailer maybe by 2" and the overall weight increasing due to the heavier axle, what benefits do I gain by going with the larger wheels/axle? One advantage I see when it's time to replace tires is the ability to go with a lot heavier rated tire with the 15". Your comments appreciated!

Pat B.
Speedway, IN
2016 Shasta Oasis 18BH
roadmaven is offline   Reply With Quote
Old 01-15-2016, 06:58 AM   #2
Phat Phrog Stunt Team
AquaMan's Avatar
Join Date: Apr 2012
Location: Tipp City, OH
Posts: 6,828
The 15" tires will be higher load range and more accessible should you need one on the road. I think anything above a C rating in 14" may be hard to find in stock. That aside, the 15" will roll much better and be easier to pull. I changed out 14's for higher rated 15's on an old TT and gained about 1 mpg pulling it.

2016 Georgetown 364TS
2017 Jeep Rubicon Recon toad
Nights Camped 2018 - 7
AquaMan is offline   Reply With Quote
Old 01-15-2016, 06:59 AM   #3
Senior Member
Join Date: Jul 2010
Location: Waynesville
Posts: 13,007
Looks like you know the answer 15" tires are easier to find in load size! Youroo!!
youroo is offline   Reply With Quote
Old 01-15-2016, 07:04 AM   #4
Senior Member
A32Deuce's Avatar
Join Date: Nov 2012
Location: Mount Laurel,NJ
Posts: 5,458
2012 SunSeeker 3100SS Toad-1962 Futura Average 100 + days camping
A32Deuce is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 10:53 PM.