Yet another Tire/Wheel question. 18” to 20”.

[Resqu2]

My 2020 RST Z71 came with 18” wheels and 265-65-18 tires, if I go up to 20” wheels do I stay with the same size tire with no issues? I’m not wanting to lift or level. The only reason I’m even thinking about it is there is a set of RST style wheels that caught my eye but they come in 20”. If I’m going to cause unwanted issues I will keep on looking. Thanks guys! 

[mafd2]

29 minutes ago, Resqu2 said:

My 2020 RST Z71 came with 18” wheels and 265-65-18 tires, if I go up to 20” wheels do I stay with the same size tire with no issues? I’m not wanting to lift or level. The only reason I’m even thinking about it is there is a set of RST style wheels that caught my eye but they come in 20”. If I’m going to cause unwanted issues I will keep on looking. Thanks guys! 

18's and 20's are 2 different size tires. The OEM 20" size for the T1 275/60/20.

[Imcrazy]

Yeah just stay with roughly the same od on your tire and you’ll be good to go. I have 18s on mine and like the look of 20s BUT, not willing to give up the softer riding 18” rims or the cheaper 18” tires. Look at some of the 18”
At4 sierra rims or the 18” trailboss rims, both look sweet and you can reuse the tires on your truck now.


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[newdude]

275/55R20 would be the same diameter as 265/65R18.

 

OE 20's is 275/60R20 as others mentioned which is a 33" tire.

 

Edited December 5, 2020 by newdude

[mafd2]

49 minutes ago, Imcrazy said:

Yeah just stay with roughly the same od on your tire and you’ll be good to go. I have 18s on mine and like the look of 20s BUT, not willing to give up the softer riding 18” rims or the cheaper 18” tires. Look at some of the 18”
At4 sierra rims or the 18” trailboss rims, both look sweet and you can reuse the tires on your truck now.


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You won't notice any ride difference from an 18" to a 20" on the T1.  The 20" tire has a 1.5" larger O.D. (33") compared to 30.5" on the 265/65/18.  Going to a 2" larger 20" wheel only gives a 1" difference in the sidewall height so comparing both has no ride difference because the sidewall height is almost the same.  Rode in too many of these trucks to know.  The 18"s to me just don't look good.  First thing I did with my RST was remove the 18's.

[guci134]

i was wondering the same thing. previously you spoke about dodge ram wheels not fitting on a gmc because the spokes were hitting the four piston calipers, my question is will the gmc wheels fit on the dodge ram configuration because the spokes wouldnt hit the calipers on ram, correct ?  and thank you for your attention