Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×

Go Back   Keystone RV Forums > Keystone Tech Forums > Tires, Tires, Tires!
Click Here to Login

Thread Tools Display Modes
Old 12-30-2013, 04:01 PM   #1
John M Gastelum
Junior Member
Join Date: Dec 2013
Location: Amado Az.
Posts: 1
Arrow New Member With a 1999 Cabana

want to upgrade to a biger size wheels and tires, bought my cabana with 13" tires, would like 15's., its possible???
John M Gastelum is offline   Reply With Quote
Old 12-30-2013, 07:57 PM   #2
Senior Member
CWtheMan's Avatar
Join Date: Feb 2010
Location: Taylors, SC
Posts: 2,994
Originally Posted by John M Gastelum View Post
want to upgrade to a biger size wheels and tires, bought my cabana with 13" tires, would like 15's., its possible???
Sorry, need more info. Can't find the specs on your trailer anywhere. There should be a certification label on the external forward section of the trailer. It will depict the trailer's GAWR, GVWR, tire & rim size and recommended tire pressure (s). Every trailer since 1972 has one. Sometimes they are just a faded patch.

CWtheMan is offline   Reply With Quote
Old 12-31-2013, 01:20 AM   #3
Senior Member
Join Date: May 2013
Location: Holland ( Europe)
Posts: 165
Probably the original 13" yust fitt under the RV and a larger rimm would mean that you have to use a lower Aspect Ratio (further AR = hight/width division)to get the same diameter.
This thoug is not good for the contact to the road of the tires and they probably need higher adviced pressure.
Might even that you have to compensate the lower maximum load with a wider tire and so rimm, wich will have to fitt, wich makes it need even a lower AR.

So my advice is leave it the way it is, but if you do , use my Traveltrailer-tirepressure-calculator or give details like GVWR and GAWR and configuration ( numer of axles and total tires on the road.
From chosen tires the maximum load and pressure needed for that , wich is not the maximum pressure of tire, but also give the sises so I can yudge howmuch to substract from the maximum load in case of low AR.

If you want to play with the calculator yourselfes, click this link to go to a map on my skydrive that belongs to my hotmail adress with same username as here. Then CLICK RIGHT on the needed spreadsheet and choose Download . Dont leftclick or choose open in web-app , goes wrong , and also dont use open in Excell, is to complicated and asks to log in with your hotmail or whatever adress.
After download and eventual virus-check ( you never know what those foreigners put into it) open it in Excell on your computer, but Open Office Calc can handle it too.

If you fill in the tires maximum load and pressure, and the GVWR is given, a warning is given if the tires have to less maximum load or poor reserve, so you can compare.

Much good for 2014 from Holland
Edit its 10:20 here in Holland at the moment but I see its 01:20 there so middle of the night.
jadatis 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
Forum Jump

Powered by vBadvanced CMPS v3.2.3

This website is not affiliated with or endorsed by the Keystone RV Company or any of its affiliates in any way. Keystone RVģ is a registered trademark of the Keystone RV Company.

All times are GMT -8. The time now is 12:09 PM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2023, vBulletin Solutions, Inc.