Tires on stock rims

familyduners · 09-09-2009, 12:01 AM

I just finished reading the thread on 35" tires on stock rims and am thoroughly confused. The goo new is that's not my problem. Mine's a little simpler in that I'm deciding between Toyo Open country AT in either the 285/70R-17 (33" tire) or the 285/75R-17 (34" tire). I do a fair bit of hiway driving and towing (10.5k lbs) so I'd like a tire that works nice on road with some traction off road (for sand camping, etc). I have a bone stock suspension and with the squad that my TH puts in the truck, I don't think a want to level the front end. Will either of these tires rub. I have the stock alloy wheels that came with the truck.

__________________
2008 3500 SRW 4x4 Megacab, 6.7L / 68RFE, Prodigy brake controller

Oregon Sportsman · 09-09-2009, 12:18 AM

Nope. Have had both sizes on my dad's '05 with no problems. He is currently running the 285/75s and is much happier with them versus the 70 series Toyos. Bone stock suspension wise...

__________________
2003 QCSB 3500. Smarty. AFE. Rip's 5". SBC Con FE. HTT SS62. FASS 150. DDP nozzles.S&B Elbow. ARP's. Pricol Boost, Pyro, FP and RP. Firestone Bags. Fabtech 4". 35s on 18s. Traction Bars. www.sourceautomotive.biz

onebadrubi · 09-09-2009, 12:20 AM

you will not get rubbing on anything but the control arms, and this is a maybe and will only be at full lock, with either of those two tires. One thing to keep in mind when going to this larger tire and towing is that to maintain that nice rpm you liked to tow at is now going to be probably 8-10mph higher. I see you have a 3500 so you possibly have 4.10 gears where I have 3.73's. So you might need someone else to comment on this. But I went from stock to 35" toyo m/t and 2 rpms was around 80mph. And thats where my truck seemed to really like to pull at. But you also have a different transmission and possibly different gear ratio, I have the 4spd auto.

JTraik · 09-09-2009, 12:53 AM

Quote:

Originally Posted by onebadrubi

you will not get rubbing on anything but the control arms, and this is a maybe and will only be at full lock, with either of those two tires. One thing to keep in mind when going to this larger tire and towing is that to maintain that nice rpm you liked to tow at is now going to be probably 8-10mph higher. I see you have a 3500 so you possibly have 4.10 gears where I have 3.73's. So you might need someone else to comment on this. But I went from stock to 35" toyo m/t and 2 rpms was around 80mph. And thats where my truck seemed to really like to pull at. But you also have a different transmission and possibly different gear ratio, I have the 4spd auto.

What kind of a fuel mileage loss do you suffer from going to these bigger tires? Not only is there added weight from being taller they also are a bit wider... so does it make a notable difference?

__________________
- Jeff
'96 2500 4x4 5spd (160k) De-silenceringed, torquekinged + rebuilt nv4500, Diamond Eye turbo back dual 4"ers, veggie kit, KDP slaughtered!

bigred04 · 09-11-2009, 11:08 PM

i picked up mileage when i went to 315's from 285's. taller tire= lower gearing= lower rpms on highway= mileage gains.

__________________
2004.5 2500 CC SB Volant CAI, 4" magnaflow, no cat, Milege Max, LED headlights, 315 Dynapro mt's

Vorden · 09-19-2009, 01:15 PM

I went from 33s to the stock tire about a 30.5 and I lost 1mpg and about 8mph at the same rpm on the highway

__________________
**1998 Dodge Ram 2500 SLT Larime 4x4 Quadcab longbed 5spd full Dana 80 4:10**

rollingradios · 09-19-2009, 08:18 PM

255/85/16 fits on stock 16 rims and lists as 33.8" tall. Actual height is 32 and change. I ran these for a few yrs on my 2500hd with no rubs and no problems. I've also used the same size on expeditions and suburbans on stocker wheels.

09-09-2009, 12:01 AM	#1 (permalink)
familyduners Newbie Join Date: Sep 2009 Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts familyduners's Truck Pics	Tires on stock rims I just finished reading the thread on 35" tires on stock rims and am thoroughly confused. The goo new is that's not my problem. Mine's a little simpler in that I'm deciding between Toyo Open country AT in either the 285/70R-17 (33" tire) or the 285/75R-17 (34" tire). I do a fair bit of hiway driving and towing (10.5k lbs) so I'd like a tire that works nice on road with some traction off road (for sand camping, etc). I have a bone stock suspension and with the squad that my TH puts in the truck, I don't think a want to level the front end. Will either of these tires rub. I have the stock alloy wheels that came with the truck. __________________ 2008 3500 SRW 4x4 Megacab, 6.7L / 68RFE, Prodigy brake controller

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09-09-2009, 12:18 AM	#2 (permalink)
Oregon Sportsman Cummins Fan Join Date: Mar 2009 Location: Independence, OR Posts: 98 Thanks: 1 Thanked 3 Times in 3 Posts Oregon Sportsman's Truck Pics	Nope. Have had both sizes on my dad's '05 with no problems. He is currently running the 285/75s and is much happier with them versus the 70 series Toyos. Bone stock suspension wise... __________________ 2003 QCSB 3500. Smarty. AFE. Rip's 5". SBC Con FE. HTT SS62. FASS 150. DDP nozzles.S&B Elbow. ARP's. Pricol Boost, Pyro, FP and RP. Firestone Bags. Fabtech 4". 35s on 18s. Traction Bars. www.sourceautomotive.biz

09-09-2009, 12:20 AM	#3 (permalink)
onebadrubi Newbie Join Date: Nov 2007 Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts onebadrubi's Truck Pics	you will not get rubbing on anything but the control arms, and this is a maybe and will only be at full lock, with either of those two tires. One thing to keep in mind when going to this larger tire and towing is that to maintain that nice rpm you liked to tow at is now going to be probably 8-10mph higher. I see you have a 3500 so you possibly have 4.10 gears where I have 3.73's. So you might need someone else to comment on this. But I went from stock to 35" toyo m/t and 2 rpms was around 80mph. And thats where my truck seemed to really like to pull at. But you also have a different transmission and possibly different gear ratio, I have the 4spd auto.

09-11-2009, 11:08 PM	#5 (permalink)
bigred04 Diesel Freak Join Date: May 2008 Location: Amherst, WI Posts: 544 Thanks: 2 Thanked 5 Times in 5 Posts bigred04's Truck Pics	i picked up mileage when i went to 315's from 285's. taller tire= lower gearing= lower rpms on highway= mileage gains. __________________ 2004.5 2500 CC SB Volant CAI, 4" magnaflow, no cat, Milege Max, LED headlights, 315 Dynapro mt's

09-19-2009, 01:15 PM	#6 (permalink)
Vorden Newbie Join Date: Sep 2009 Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts Vorden's Truck Pics	I went from 33s to the stock tire about a 30.5 and I lost 1mpg and about 8mph at the same rpm on the highway __________________ 1998 Dodge Ram 2500 SLT Larime 4x4 Quadcab longbed 5spd full Dana 80 4:10

09-19-2009, 08:18 PM	#7 (permalink)
rollingradios Newbie Join Date: Sep 2009 Posts: 6 Thanks: 0 Thanked 1 Time in 1 Post rollingradios's Truck Pics	255/85/16 fits on stock 16 rims and lists as 33.8" tall. Actual height is 32 and change. I ran these for a few yrs on my 2500hd with no rubs and no problems. I've also used the same size on expeditions and suburbans on stocker wheels.