|
02-14-2014, 11:20 AM
|
#1
|
Member
Join Date: Aug 2013
Posts: 60
|
New TV Tire Size Question
Hello All,
The DW and I are finally ready to pull the trigger on a new TV to replace our aging Trailblazer. I am sold on the new 2014 Chevy Silverado but am curious on the advantages/disadvantages of 20" tires/rims a compared to 18" tires/rims. I have been looking at two different options on a few trucks that come with 18" or 20" tires. Any input?
__________________
Big Johnny
2014 Chevy Silverado 1500
2024 Mini Lite 2518S
Are we having fun yet??
|
|
|
02-14-2014, 11:43 AM
|
#2
|
Senior Member
Join Date: Jun 2013
Location: Nebraska
Posts: 630
|
Rim size is only part of it. The amount of sidewall the tire has plays a big part of load capacity as well as stability of the tire. My opinion is a tire with a 65-70 aspect ratio to tire width is best for towing. You may not be able to find that in a 20" diameter without going to a rather large over all sized tire.
265/70/17 is what is on my truck.
265 is the width of the tire while 70 is a ratio of sidewall vs tire width an the 17 is rim diameter.
__________________
TV- 2015 Ram 2500 CCLB 6.7 Cummins 3.42 gears
Camper - 2015 Saber 322BHTS
|
|
|
02-14-2014, 11:59 AM
|
#3
|
Senior Member
Join Date: Jun 2012
Posts: 361
|
I have 275/65R20 Michelins on my F350 and no problems at all towing. A 20" tire looks better on a larger truck IMHO.
__________________
2012 F350 Lariat CC SRW 6.7L Powerstroke
|
|
|
02-14-2014, 12:54 PM
|
#4
|
Member
Join Date: Aug 2013
Posts: 60
|
Missing Tire Size
Sorry. The tire size would be 265/65/18 or 275/55/20. My question is there an advantage to one size over the other? Either would be factory installed options.
__________________
Big Johnny
2014 Chevy Silverado 1500
2024 Mini Lite 2518S
Are we having fun yet??
|
|
|
02-14-2014, 01:02 PM
|
#5
|
Phat Phrog Stunt Team
Join Date: Aug 2011
Location: Iowa
Posts: 34,507
|
whats the load range on the two tires you question ?
|
|
|
02-14-2014, 01:07 PM
|
#6
|
Site Team
Join Date: Nov 2011
Posts: 4,499
|
Don't like the squatty look of 20"s. Nor the higher cost. My 18" cost too much already on my half ton. Father in law has 16"s on his Chevy 3/4 ton. ??
__________________
2018 Forester 3011 DS
|
|
|
02-14-2014, 01:27 PM
|
#7
|
Senior Member
Join Date: May 2012
Posts: 1,368
|
My stockers are lt275/65/20....my nittos are 35x12.5x20....over all nearly identical in height....the stock 17 or whatever ford puts on the other 250s look funny heck even the 20s look like pizza cutters on the big ol truck.....although the stock michellins tow and drive fantastic....
Also ford makes u go to the 355 rear end instead if you option the 20s from the factory...I think the smaller wheels come with like 337 rears....so there is some difference there as well..
Sent from my SAMSUNG-SGH-I747 using Forest River Forums mobile app
__________________
2015 F350 Platinum Fx4 6.7 Diesel Dually. B&W turnover, B&W Companion, air bags and wireless controller.
2015 Heartland Road Warrior 420 Rt
2012 f250 Fx4 6.7 Diesel crew cab tinted n tuned
2012 lacrosse 318bhs touring- sold
|
|
|
02-14-2014, 01:50 PM
|
#8
|
Member
Join Date: Aug 2013
Posts: 60
|
I don't know the load range of either tire size. We have seen both sizes on various models at the dealer lots. Our trailer is only 4700-5300 lbs.
__________________
Big Johnny
2014 Chevy Silverado 1500
2024 Mini Lite 2518S
Are we having fun yet??
|
|
|
02-14-2014, 01:56 PM
|
#9
|
Senior Member
Join Date: Sep 2013
Location: Idaho
Posts: 9,839
|
Quote:
Originally Posted by tipakajohn
I don't know the load range of either tire size. We have seen both sizes on various models at the dealer lots. Our trailer is only 4700-5300 lbs.
|
Is that weight ready to roll down the road or sticker light weight?
__________________
2016 F350 6.7L LB CC Reese 28K 2014 Chaparral Lite 266sab
"Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety." 2014 19 days camping 2015 17 days camping201620 days camping
|
|
|
02-14-2014, 01:58 PM
|
#10
|
Member
Join Date: Aug 2013
Posts: 60
|
That weight is my estimate. I would guess it is lower than the actual weight once I start to think about it.
__________________
Big Johnny
2014 Chevy Silverado 1500
2024 Mini Lite 2518S
Are we having fun yet??
|
|
|
02-14-2014, 02:09 PM
|
#11
|
Senior Member
Join Date: Jun 2013
Location: Nebraska
Posts: 630
|
I still say an aspect ratio of 65-70 will give you the best stability. With a decent tire you probably wont notice much difference in the 18 or 20 rim with the same overall dimension tire, but there will be some. Especially if you are looking at a 1500, hopefully you rarely/never have enough weight to play that much difference.
If you are looking at 10 ply tires (which I recommend) you shouldn't notice much difference.
Something else to consider is that there are more tires that will fit an 18" wheel than there will be a 20" wheel with the same overall stock height. You will still be able to find them with the 20's but will be a little more limited...
__________________
TV- 2015 Ram 2500 CCLB 6.7 Cummins 3.42 gears
Camper - 2015 Saber 322BHTS
|
|
|
02-14-2014, 02:22 PM
|
#12
|
Site Team
Join Date: Aug 2012
Location: top side land of Lincoln
Posts: 7,509
|
I would pick the 18" over the 20" but prefer 17"my myself. For towing I want LT tires with a beefy load range.
Them new Chevys are way nice!!! Lucky you
And will need pics
__________________
2014 LaCrosse 323RST-TE-C
2009 Chevy 2500HD Z71
Seasonal
Zelda the campin dog
|
|
|
02-14-2014, 02:42 PM
|
#13
|
Senior Member
Join Date: May 2012
Posts: 1,368
|
Also with a 20" rim and a decent towing tire like a lt275/65/20 you need a decent ammount of wheel well clearance!!. Thats almost 35" tall of tire and wheel!...many stock pickups just won't clear that kinda rubber unless lifted. ...so Your better off with a 17 or 18 to get enough meat on the side wall
Sent from my SAMSUNG-SGH-I747 using Forest River Forums mobile app
__________________
2015 F350 Platinum Fx4 6.7 Diesel Dually. B&W turnover, B&W Companion, air bags and wireless controller.
2015 Heartland Road Warrior 420 Rt
2012 f250 Fx4 6.7 Diesel crew cab tinted n tuned
2012 lacrosse 318bhs touring- sold
|
|
|
02-14-2014, 04:51 PM
|
#14
|
Senior Member
Join Date: Jan 2014
Location: SK, Canada
Posts: 190
|
Our Ram 1500 came with 20" on it. I like them, but in our neck of the woods to get a heavier sidewall tire in 20" the selection is limited. I'm having to go with Nitto Dura Grappler E rated (10ply) 275/60R20 and they are expensive.
Defintely a lot more LT tire selection for 17" wheels and I imagine 18" as well.
__________________
2013 Forest River Surveyor SP296
|
|
|
02-14-2014, 06:43 PM
|
#15
|
Member
Join Date: Mar 2013
Posts: 74
|
I looked on the Michelin website and neither tire is available as an LT type tire, they are all P metric. Both tires are only rated at about 2200 pounds of load. I would look for a package that will allow the use of LT rated tires. they will wear, perform, feel much better. P rated tires are for all purposes passenger tires. LT is a truck tire and will do much better for trailer towing. My son in law has an ecoboost truck that came equipped with P series tires that were able to be swapped for identical size LT rated tires No comparison when pulling the trailer and none in the wear of the tire.
|
|
|
02-14-2014, 09:12 PM
|
#16
|
Commercial Member
Join Date: Jul 2013
Location: Akron, Ohio
Posts: 1,894
|
Three things to consider.
The Load capacity of the two different tires.
Higher Aspect ratio tires will be less prone to pot-hole damage
Check the cost for a set of tires. I expect you will probably need at least one complete set. What is the total cost difference?
__________________
.Write a blog on RV tire application RV Tire Safety. 48 years experience as tire design & forensic engineer. My RV Freelander 23QB on Chevy 4500 chassis. Giving seminars on RV Tire applications (not selling)@ FMCA Conventions. Mar 20-22 Tucson AZ
|
|
|
02-14-2014, 09:28 PM
|
#17
|
Mod free 5er
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,702
|
P rated tires are definitely not good for towing regardless of the size.
__________________
|
|
|
02-14-2014, 11:52 PM
|
#18
|
Oklahoma Proud
Join Date: Jul 2012
Location: central OK
Posts: 2,784
|
Quote:
Originally Posted by tipakajohn
Sorry. The tire size would be 265/65/18 or 275/55/20. My question is there an advantage to one size over the other? Either would be factory installed options.
|
So I just ran your numbers on my tire size calculator. And heres my findings
------265/65/18 =
- 31.5" tall
- 10.4" wide
- sidewall 6.8"
- typical weight 45 lbs
------275/55/20
- 31.9" tall
- 10.8" wide
- 5.9" sidewall
- typical weight 44 lbs
Of course the 20s may be slightly stiffer due to the fact there is almost an inch less of sidewall.
-typically the 18" tires have a higher load rating than 20s- thats why you cant get 20s stock on Gm 3500hd srw trucks.
Also these are almost exactly the same size as a 265/75/16 tire they are all within about 1/4" to 3/8" of each other.
Ps. My 295/70/18 - 35" class (actually about 34.3") have a 10 ply rating and 4080 lb load rating (nitto trail grapplers)
|
|
|
02-15-2014, 01:06 PM
|
#19
|
Oklahoma Proud
Join Date: Jul 2012
Location: central OK
Posts: 2,784
|
Another note the 20s seem to cost a little more than the 18"tires. But I think the 20s look a little better- money aside. I only got 18s cause of the cost factor though. But if its on a new truck, id get the 20s for sure!!
oops. forgot to check mark that stupid box again!
|
|
|
|
Thread Tools |
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|