Plus Sizing Tires Without Gear Change?
#1
Plus Sizing Tires Without Gear Change?
My tires are getting to the point where I'm going to start looking for new tires. I have 265/75-16s on there right now (Pirelli Scorpions). I'm thinking of moving up to 285/75-16s. I'm really happy with the shift points and cruising speed (63mph@1800rpm in OD) and don't want to affect it too much.
WARNING: Type 'A' geek info coming. Read at your own risk!
If my 265's are roughly 31.6" tall and the 285's will be 32.8" tall will result in circumfrences of 99.3" and 103.0" respectively. I know that it's only a 4% difference, but I've seen things change ever-so-slightly and result in a large difference.
I've read that the speedo is a little fast (5-6% if I use the radar speed trailer set up near my house) anyway and 285's are about what it's calibrated for anyway. I'm looking to fill out the wheel well a little better and get a little more rubber to the ground when I'm out in the dirt on weekends.
I'm looking for anybody who has upped to the 285's and kept the 3.73 gears. Did you notice any difference in driving around? Do you find it coming out of overdrive on hills? Are you pleased with the truck's performance (i.e. transmission shifting and power band) after the change?
I'm trying to see if it's worth the money and I'll still be happy or just stay where I'm at and deal with the pizza cutters I have now until I can afford lift/wheels/tires/gears. Plus there aren't too many 'E' rated tires in the 285 size...
Thanks for any info.
WARNING: Type 'A' geek info coming. Read at your own risk!
If my 265's are roughly 31.6" tall and the 285's will be 32.8" tall will result in circumfrences of 99.3" and 103.0" respectively. I know that it's only a 4% difference, but I've seen things change ever-so-slightly and result in a large difference.
I've read that the speedo is a little fast (5-6% if I use the radar speed trailer set up near my house) anyway and 285's are about what it's calibrated for anyway. I'm looking to fill out the wheel well a little better and get a little more rubber to the ground when I'm out in the dirt on weekends.
I'm looking for anybody who has upped to the 285's and kept the 3.73 gears. Did you notice any difference in driving around? Do you find it coming out of overdrive on hills? Are you pleased with the truck's performance (i.e. transmission shifting and power band) after the change?
I'm trying to see if it's worth the money and I'll still be happy or just stay where I'm at and deal with the pizza cutters I have now until I can afford lift/wheels/tires/gears. Plus there aren't too many 'E' rated tires in the 285 size...
Thanks for any info.
#2
Well, i went to 285,s for the same reason, fill those wheel wells and even though its only an inch or two bigger, i like the looks. They are a bigger tire so it takes a little more, not much to get it going throttle wise. Try to get a E rated tire, my D,s are good but i lost the stiffness and tighter handling, otherwise very pleased with them. I got my 373,s and theres a 1-3 mile difference in speedo for me, seems that way but never was clocked. Without my chip on a hp setting and in stock, depending on the grade, it will jump out of OD. My .2 cent, get the 285,s, they look great.
#3
#7
Hey SR. I went ti the 285's, and I thought it was shifting alittle more than with the 265's. I tow a 35' fifth wheeler, and actuslly went back to the 265's. I was told that the 285's have a D rating but, are really an E rate. I really liked the 285's but my rig is gettin tired(engine) and until i do some mods, will stick with these. BU1(SCW,FMF)
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#8
#9
Hey SR. I went ti the 285's, and I thought it was shifting alittle more than with the 265's. I tow a 35' fifth wheeler, and actuslly went back to the 265's. I was told that the 285's have a D rating but, are really an E rate. I really liked the 285's but my rig is gettin tired(engine) and until i do some mods, will stick with these. BU1(SCW,FMF)
When you're towin' and haulin' those 800lbs and sidewall stiffness can make a difference though...
#11
#12
However, just don't subject a "C" or "D" tire to the same sidewall-deflecting forces....or it's bye bye seated bead. There's a reason that letter is there.
Whatever tire you choose, I will try to steer you away from Yokohama Geolandar A/Ts. I install a ton of these tires on customer trucks and the response is always the same...."It feels like the tires are flat. The truck just floats around." The sidewalls, even on the 10 P.R. tires are WEAKER than paper....and the 285s don't come in anything but 8 P.R.
#14
Depending on the tire is right. I had a set of load range "C" tires (6 P.R. of the antiquated system) that had a weight limit of 3600 lbs. at 25 PSI. Try to find a load range "E" tire with those numbers.
However, just don't subject a "C" or "D" tire to the same sidewall-deflecting forces....or it's bye bye seated bead. There's a reason that letter is there.
Whatever tire you choose, I will try to steer you away from Yokohama Geolandar A/Ts. I install a ton of these tires on customer trucks and the response is always the same...."It feels like the tires are flat. The truck just floats around." The sidewalls, even on the 10 P.R. tires are WEAKER than paper....and the 285s don't come in anything but 8 P.R.
However, just don't subject a "C" or "D" tire to the same sidewall-deflecting forces....or it's bye bye seated bead. There's a reason that letter is there.
Whatever tire you choose, I will try to steer you away from Yokohama Geolandar A/Ts. I install a ton of these tires on customer trucks and the response is always the same...."It feels like the tires are flat. The truck just floats around." The sidewalls, even on the 10 P.R. tires are WEAKER than paper....and the 285s don't come in anything but 8 P.R.
#15
[quote=cleatus12r;6759630
Whatever tire you choose, I will try to steer you away from Yokohama Geolandar A/Ts. I install a ton of these tires on customer trucks and the response is always the same...."It feels like the tires are flat. The truck just floats around." The sidewalls, even on the 10 P.R. tires are WEAKER than paper....and the 285s don't come in anything but 8 P.R.[/quote] I agree with the floating statement on these Yoko,s i got, not a good cornering or handling tire but their holding up ok. I'll defintly go back to my B.S. Revos when these are done, a little pricy but worth it. I had the 265,s and they lasted a long time with great traction and handling.
Whatever tire you choose, I will try to steer you away from Yokohama Geolandar A/Ts. I install a ton of these tires on customer trucks and the response is always the same...."It feels like the tires are flat. The truck just floats around." The sidewalls, even on the 10 P.R. tires are WEAKER than paper....and the 285s don't come in anything but 8 P.R.[/quote] I agree with the floating statement on these Yoko,s i got, not a good cornering or handling tire but their holding up ok. I'll defintly go back to my B.S. Revos when these are done, a little pricy but worth it. I had the 265,s and they lasted a long time with great traction and handling.