Soft / smooth riding 20 inch tire suggestions

Discussion in 'Chevy Silverado Forum (GMC Sierra)' started by kalashluvr, Dec 15, 2010.

  1. kalashluvr

    kalashluvr New Member

    I have a 2010 Silverado with factory 20's (Goodyears).

    I know they're going to ride rough, but I can feel every nook and cranny in the road along with small bumps I never even knew were there!!

    Has anyone replaced their factory tires with some that ride a little better? Would a softer shock help? The pavement has to be ultra smooth before my truck even hints around at having a good ride.

    Thanks in advance!!
  2. 04-silverado

    04-silverado New Member

    IMO: sidewall height is key to a smoother ride. With low-profile tires, having little flexibility, one is asking all other components to "compensate". I suggest going with the tallest profile tire you can use... the rest of the suspension system components will better be able to "smooth" things out for you.
  3. adampaul1964

    adampaul1964 New Member

    I've been running Cooper's on my truck for the past 2 summers, I use 305/50/20 which is a little taller than the factory 275/55/20 and therefore slightly more sidewall. I run the Discoverer H/T plus and I'm very happy with the ride and wear characteristics, I was going to go with an all terrain but in that size they are too pricey for me at moment. I've heard nothing but negatives about the Goodyears G.M. uses, I'm sure they are probably the cheapest thing they can find!
  4. kalashluvr

    kalashluvr New Member

    Well, i'd really like to keep the sizes the same so that my speedo isn't really affected, etc. I've had 15 inch tires with tall sidewalls that rode rougher than others, so I know there's going to be the "best riding 275/55/20" stories. I guess if all else fails I'll investigate taller sidewalls. thanks for the input though!

    ---------- Post added at 09:39 AM ---------- Previous post was at 09:38 AM ----------

    Are the wheels you have on the truck comparable to the factory 20's (width?). Just wondering if the 305/50/20 will be too wide. If that's them in the pic, they look great.
  5. adampaul1964

    adampaul1964 New Member

    They are G.M. factory 20's model CK948, the 305's fit fine. Hopefully these pics show how well they fit.


  6. 04-silverado

    04-silverado New Member

    Aside from the excellent advice others may offer here, I suggest going to this website:

    "Play" with specs, try different settings, compare results, see differences... "Find what fits"​

    Determine what the factory original OVERALL height was. Remember it is the overall original HEIGHT (inflated tire) which needs to be maintained within about +/- 3-5% (i.e., an error of 3 to 5 mph @ 100 mph ... half that error at 50 mph ... etc.) or your FACTORY speedometer calibration will be out. When considering a change in TIRE SIZE, goto this website:

    "Input your original Vehicle Stock Tire Size data" and then input one (or more) alternative tire sizes to see how much ERROR there is going to be. ​

    I don't stray from original factory setup, but many others do. If your speedometer gets too far out of calibration, you could always have it recalibrated (or even buy a tuner of your own that will perform such a function).

    ...just my 2cents -- karl
    Last edited: Dec 15, 2010
  7. kalashluvr

    kalashluvr New Member

    Thanks for all the info everyone. If anyone has replaced their factory 275/55-20's with the same size but different brand of tire and the truck rides better, please chime in...thanks!!
  8. troutbug

    troutbug New Member

    Some suburbans/avalanches come with the Bridgestone Dueler H/L Alenza. Check into these and see what you think. Maybe you know somebody that drives a 'burb or avalanche? BTW, what pressure do you keep your tires at?
  9. kalashluvr

    kalashluvr New Member

    Ahh...good idea. I have a few friends that have Yukons with 20's.

    The pressure is around 33 or 34 right now. I thought about dropping it down to 30lbs to see if there's any improvement.
  10. troutbug

    troutbug New Member

    Just remember some of those vehicles might have Autoride, which may make the ride a little smoother than your leaf springs.
  11. eyegore

    eyegore New Member

    I just put on a set of Cooper Zeon LTZ's. (275-55-20) Factory tires were Goodyear Eagle LS-2 Seemed to feel everything on the road with them. While I only have about 100 miles on these Cooper's, IMO, they ride 10x's better than the Goodyears. Had 40k on the Goodyears.
  12. kalashluvr

    kalashluvr New Member

    Thanks for the reply...I'm glad to hear there's hope after Goodyears!! I'll be waiting for a report with more miles. What's the air pressure in the Coopers?
  13. eyegore

    eyegore New Member

    I'm running 30 lbs just like the Goodyears. I thought they should be more but the garage that mounted them said to run 30. Now these tires are more aggressive than the Goodyears. So if you're looking for a summer/touring tire, these probably won't fit the bill. I live in NW PA so I needed something that was better in weather than the stock tires that came with the truck. Hope this helps.
  14. geardrivensoul

    geardrivensoul New Member

    Like one of the earlier posts said, it's primarily due to the aspect ratio of the side wall on the low profile tires. These have several adavantages: looks, larger contact patch, reduced rolling resistance (better milage) You might spend a lot of time and effort swapping tires and find nothing is as good (ride-wise) as changing to a smaller wheel with more sidewall.
  15. kalashluvr

    kalashluvr New Member

    There's no doubt in my mind that going to a smaller wheel and taller side wall would resolve every ride problem that I have....but I whined and complained to my wife so much about wanting a Silverado with "those 20 inch wheels" and I don't even want to think of the argument that would ensue if I did a wheel swap...I'll live with my rough ride before I do that!! :)

    But, I'm sure there's a better riding tire out there than the Goodyear tires that are OE....I just need to hear from a few folks that have replaced theirs and can state that there was a definite improvement.
  16. 2010TexasEdition

    2010TexasEdition New Member

    Michelin LTX M/S2 are probably one of the best highway tires you can get. my dad just replaced his 1st set of these Michelin's on his 04 silverado, they last almost 90,000 miles! that is what i'll be putting on my 2010 silverado once the original tires wear out. here's a link for them: 1500 2wd&autoModClar=Crew Cab
  17. 04-silverado

    04-silverado New Member


    Grab a copy of CONSUMER REPORTS (or subscribe to -- the online edition). I bought the GENERAL GRABBER HTS to replace my OE tires (16" stock rims), because they were rated best overall for highway driving. I do NOT regret my purchase (bought them online from -- as they had the best price, by far, at the time). Here are the most recent TIRE RATINGS, from my consumer reports online subscription:

    Tire Brand & Name - Avg. Price - Rating (100 being best)

    General Grabber HTS - $105 - 80
    Continental CrossContact LX - $108 - 73
    Kumho Road Venture APT KL51 - $104 - 72
    Cooper Discoverer CTS - $159 - 68
    Michelin LTX M/S - $165 - 67
    Yokohama Geolandar H/T-S G051 - $111 - 67
    Firestone Destination LE - $106 - 66
    Bridgestone Dueler H/L Alenza - $154 - 66
    Dayton Timberline HT II - $99 - 66
    Pirelli Scorpion STR A - $128 - 65
    Goodyear Wrangler SR-A - $133 - 64
    Dunlop Radial Rover A/T - $118 - 63
    Hankook DynaPro AS RH03 - $98 - 63
    Goodyear Fortera TripleTred - $162 - 63
    Toyo Open Country H/T - $108 - 62
    Nitto Dura Grappler Highway Terrain - $148 - 61
    Dunlop Grandtrek AT20 - $119 - 58
    Uniroyal Laredo Cross Country - $103 - 55
    BFGoodrich Rugged Trail T/A - $127 - 53
    Falken Ziex S/TZ-04 - $102 - 50 ​

    YMMV - karl
  18. 04-silverado

    04-silverado New Member

    ...just adding the following for general FYI as to "tires and their makers"

    * goto: Tips/whoownswho.htm

    * scroll to the last section on that page, entitled:
    Tire Manufacturer Web Sites

    * just above that section heading is an interesting note regarding "who owns who" as to tire manufacturers.

    NOTE that "Continental" owns "General" (and both brand names are #1 and #2 on the Consumer Reports list which I posted above). And, of course, below that TITLED section is a list of links to a plethora of tire makers' websites.

    FWIW - karl
  19. geardrivensoul

    geardrivensoul New Member

    Know where you're coming from. If you haven't tried, you might try adjusting air pressure a bit. The low profile tires are lot more sensitive to air pressure changes +/-2 lb can make a pretty big difference due to smaller volume of air in the tire.

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