Many cars do this. There are other threads on this subject too. I know for a fact that vehicles with factory 21/22 rims and tires their speedometer is 2mph faster than actual speeds.
This is funny. Everyone rushing to get an adapter that bought this one because it was an absolute necessity in their eyes now have an additional safety hazard. Patience indeed is a virtue
The speedometer from factory is offset by 2mph at speeds above 40. So by going to 275/65 it ends up with a perfect match. I tested it out with waze, street radar and a gps speed app.
also btw, off topic slightly but if you go from 22/21 down to 20" rims and 275/65/20 your speedometer will match gps speed perfectly. If you go 275/60/20 it will be off 2mph (GPS 70 mph will equal 72 Vehicle Speedometer)
Added image I took today to show how speedo matches gps with my current setup
Just got my new rim/tire combo with the ridge grappler 275/65 116T. I will report back after broken in and put through its paces :)
The wheel/tire combo weights exactly 80lbs which is what my R800 with the 275/60 terrain contact H/T were
Set of four R800 wheels with 275/60/20 Continental Terrain Contact H/T
Tires have less than 1,000 miles on them
Wheels come with OEM Rivian TPMS
Send me your actual best offer :)
local only (Albany, NY)
I’m really starting to think weight of tire isn’t that big of a factor. It’s more the rolling resistance the specific tire may have in combination of course with weight of package (rim and tire) My terrain contact h/t got 2.3 in 40 degree weather doing 70mph on a 180mph hwy drive I believe...
I got a set of 4 brand new General Grabber HTS60 275/60/20 116T for sale. Located in Albany NY. Do not wish to ship so local only. Make a serious offer via private message.
Tires won't ever have a load on them. I am switching to the recons before even putting the new rims on the truck. I understand and am assuming risk of getting a louder tire and worse efficiency than both the HTS60 and the Terrain contact but I am more for the looks at the moment :/
Decided to switch to 34" (275/65/20) Recon Ridge Grapplers 116T. I got a set of the new Black Rhino Voltac rims and the HTS60 just look off on them. Rims look ugly with those tires.
Will post up a set of brand new never driven on 275/60/20 116T General Grabbers HTS60 tomorrow located in...
@ksurfier Today’s trip from upstate NY to Jersey. 175miles. In NY I was going 70 then in Jersey it was between 55-65. Temps in the 50 outside and battery around 68.
Conserve mode entire trip. Nice to see and I expect to see more in the future as it gets warmer and when I switch to HTS60