I see many truck /camper type conversions that came with duellies changed to super singles (I think thats the term) better for plowing ect where can you get purchacing info on these tire rim combos. -

I run Rickson 19.5's............they are rated for 6400 lbs that equivlant to a set of duels -

Whit's Sig:

* 01 Cummins/Dodge/HO/6 speed*275 injectors*PDR 35 turbo w/14cm housing & high pressure boots*HTT 3 piece ported exhaust manifold*Progaurd 7 with prefilter*Edge Comp*Fass II*Southbend con OFE*Jacobs brake*5"Stacks Big ens*E/F shift knob w/2low & brake switch*10 Gages*KW Ram air System cab controlled*Rickson 19.5x265's*True speed calibrator*Rancho 9000's*DT track bar*DSS steering stabilizer*KW Side impact rails*KW Traction Bars*Toolbox/fueltank 60 gal Combo*Mag High Tech Diff Cover*Ranchand bumpers*Grover air horns*Rear Wheel Cylinder Upgrade DYNO 375 Horse 941 Torque

Always remember...when life hands you Lemons,ask for Tequila and Salt and call me over!

How do you like the feel driving the 19.5s, are they the ones pictured in the snow -

yes......I have the Goodyear G124 on there now, 265/19.5

They are a bit stiff but thats to be expected, they will get me over 100k miles outa them so they justify the cost easily, the heavy payload is why I bought em though -

Attached Images

g124.jpg (76.2 KB, 9 views)

dose the extra weight of the tire rim combo affect milage and the feel of your gearing on the highway. -

.....tricky question

The tire is 35" tall so yes it does effect gear ratio................I had 3:55 gearing and run the 6 speed manual so when cruzing empty my RPM is down compared to regular tires and also whn I tow heavy I run 5th gear and that keeps my RPM up and works very very well...............overall the weight of the tire rim combo is 172 lbs so they are very heavy but I see my milage still running 20-21 on a regular basis so the end result is the extra weight is compensated by the taller tire and its a wash in the end -

May I help?
To calculate the ideal cruising speed you need:
- the max. torque and its speed example: 650ft.-lbsat 1600rpm
- tire diameter : 30"
- gear ratio of the highest gear : 0.71
- gear ratio of the rear end : 3.73
- constant to get rev's per hour : 336

ideal cruising speed =RPM x tire diameter/gear ratio x336

at our example: 1600 x 30/(.71 x 3.73 x 336)= 53.94mph

you can neglect tire weight, important is tire diameter

Remember: above 55mph areodynamic drag grows strong.

With that calculation you can calculate best efficency. By comparing stock and modification you can see if it is better or worse than the stock combo.

Hope this helps. Michael -

excellent info Michael........thanks bro -

Thank you, I use this formula a lot to get better mileage
I forgot to mention, since torque is maximum at this speed and rpm- towing performance is also best here. -

You guys are too good. -

man I need a tach.

guess my setup would be at 63mph and 1800rpm? hmm at 63(73 on my speedo) the motor is screamin.. maybe I don't have the stock 3.5 gears anymore? -

Budgreen's Sig:

1993 W350 club cab 4x4 5spd dually.
Homemade custom fuel pin, star wheel and smoke screw cranked. 366 spring, HX35 in a few weeks possibly

just go taller tires dude -

Don't forget you need the rpm at top torque not at top hp!

63mph seems to be very high- do you have already bigger tires on? -

Deezel Stink3r's Sig:

1999 Jeep Cherokee 2.5 TD VM Diesel engine, Bosio Fratelli Injectors, Manual Forge MUNOS boost controller, oil cooler fan operated at 212°, standby coolant pump with electronic controlled temperature and delay, oil temperature & boost gauge by VDO, ARB rear locker, Optima red top

American Force, Big Dually Wheels and Rims -- Custom Dually Wheels For Big Trucks -

sidekick's Sig:

2006 Ram 2500 6" Fabtech lift, 35" Toyo Open Country M/T tires,
18" Xtreme Alloy 6001 wheels, S&B cold air intake and air horn,
Magna Flow 5" turbo back exhaust, Mads Electronics Smarty, Edge Juice w/Attitude,
Devils Own Water Meth, BD Super B Special Turbo, BD Boost Fooler,
Torque Converter by BD Power, Home made traction bars

cool man..........as long as they are a direct bolt up.........I dont like adaptors -