Sunline RV Forum
Sunline User Photos

Go Back   Sunline Coach Owner's Club > Sunline Club Community Forums > Sunline Community
Click Here to Login

Join Sunline Club Forums Today


Reply
 
Thread Tools Search this Thread Display Modes
Old 06-21-2011, 10:36 AM   #1
Junior Member
 
Join Date: May 2011
Location: Virginia
Posts: 3
SUN #2265
shirleybird is an unknown quantity at this point
New Tires

We have a 2007 T2753 TT that we are going to purchase 4 new Maxxis tires for. I am currently running tires that are ST205/75R with a C load rating. Looking at maybe increasing to a D load rating. We have the black star aluminum 15x5 rims. Over the phone, both the Treadit company we bought the rims from and the local dealer we are buying the tires from say it will work. What are your thoughts. This purchase is going to cost me a fortune. I want to make sure I'm not wasting my money.

Thanks for all of your input.
__________________

__________________
shirleybird is offline   Reply With Quote
Old 06-21-2011, 06:44 PM   #2
Moderator
 
EMD_Driver's Avatar
 
Join Date: Jul 2009
Location: West Virginia
Posts: 2,039
SUN #897
EMD_Driver is an unknown quantity at this point
Send a message via MSN to EMD_Driver Send a message via Yahoo to EMD_Driver
I upgraded the 'C' rated tires on my utility trailer, with 'D' rated ones. I had to move the trailer's fenders for clearance. It was a tight squeeze already and the bigger tires wouldn't clear.

If you have plenty of room, I see no reason not to upgrade!
__________________

__________________
Gary
SunlineClub Custom Google Search

2007 Peterson Excel Limited 30RKE
2014 Ford F350XLT SRW Crew Cab, Long bed 6.7PSD

EMD_Driver is offline   Reply With Quote
Old 06-21-2011, 09:31 PM   #3
Moderator
 
JohnB's Avatar
 
Join Date: Nov 2006
Location: Ohio
Posts: 10,162
SUN #89
JohnB is on a distinguished road
According to this chart, M8008 ST Radial Look under spec's

Maxxis does make a 205/75R15 D range tire that is the same OD as the 205/75R15 C range tire. Both are listed as 27.1" OD

That for sure is something to verify as the low ridding Sunlines do not have excess fender clearance.

The D's are also 65psi tires. I'm making an assumption that your rims are rated for 65psi? Yes/No?

If you do get the upgrade request high pressure valve stems. They really do not cost much if anything more then the standard stems but are a better stem. They look like this. See the long brass stem verses the standard all rubber on the outside.


I'm also assuming you know to request that all tires are ideally 6 months or less old and no older then 1 year. You can see the dates on the DOT code. They have no problems selling you 2 or 3 year old tires as new if you do not ask. You may have to wait a few days but it's worth the wait.

Now to upgrade to D's or not. Taking your camper to the scale and getting an actual axle weight is a good thing to do. Then you know what load your putting on the tires and how much safety cushion you have. The good news is Sunline would build the camper using the axles, springs and tires to be able to hold the entire GVWR of the TT. Not all TT makers do this. The tongue is held by the truck so it you are staying at or under the TT GVWR you should not run out of tire capacity providing your evenly loaded enough left to right and your towing close to level.

Now do you add the extra safety cushion of D range? If you rims can take the pressure/load and the OD checks out then in your case it comes down to the extra dollars of the C to a D. The C's have a total load capacity of 7,280# and the D's 8,600. So your gaining an additional 1,320# on all 4 tires or 330# per tire. If your camper loaded come in at say 6,500# and the tongue is 13% or 845# as a estimate then that leaves 5,655# on the TT tires. On the C's you have now that would be 1,625# total or 406# extra per tire if left to right loading was equal which it is not. Going to a D will bring you up from 406# to 736# safety cushion per tire close to almost double. On paper it looks like a good upgrade. Then the question is will a tire pressure monitor system on the C range gain you a similar safety upgrade? Good question.

OK what is the price difference between C and D? After looking at it on the weights the difference in price may be easier justified or not.

Hope this helps

John
__________________
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC

Google Custom Search For Sunline Owners Club
JohnB is online now   Reply With Quote
Old 06-22-2011, 04:53 AM   #4
Senior Member
 
Join Date: Jan 2011
Location: Florida
Posts: 1,274
SUN #1830
Jim-Bev-2363 is an unknown quantity at this point
"OK what is the price difference between C and D? After looking at it on the weights the difference in price may be easier justified or not".


Was that a definite maybe? LOL!
__________________
Beverly & Jim
Sebring, Florida
1991 T-2363 Solaris
Jim-Bev-2363 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tires Diane Sunline Community 6 06-22-2011 02:13 PM
help with tires Tweety Repairs and Maintenance 12 09-12-2009 02:07 PM
TV Tires Mike Towing and Tow Vehicles 12 11-30-2008 03:57 PM
Tires ?? heaton Repairs and Maintenance 27 07-03-2008 10:54 PM
Can someone help me with tires! dan&deb Towing and Tow Vehicles 11 03-20-2008 07:51 PM


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Sunline RV or any of its affiliates. This is an independent, unofficial site.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:30 PM.


×