275/55R20 Tires - recalibrate speedometer?

[Malkozaine]

If I got 275/55R20 tires, can Rivian recalibrate the Speedo to them?

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[FooF]

Can….maybe
Will…no

 

[Cavalryscout18]

Doubtful

 

[Zoidz]

Early on there were a few reports that Rivian did this. But I don't recall any recent reports. FWIW, from what I have read, neither Ford nor Chevrolet will do a recalibration for non-standard tires either.

 

[Riviot]

Likely not, there is no comparable diameter. What tire are you eyeing?

 

[jjswan33]

FWIW if you are currently running a 33” tire (the 21s or 22s) I wouldn’t worry about recalibrating the speedo, it likely will not be very far off. Going from 34” (OEM 20”) size would be a pretty large difference though.

 

[UnsungZero_OldTimeAdMan]

If I got 275/55R20 tires, can Rivian recalibrate the Speedo to them?

They only do it for sizes they offer

 

[Malkozaine]

Likely not, there is no comparable diameter. What tire are you eyeing?

https://www.tirerack.com/tires/hankook-dynapro-at2-xtreme

 

[jjswan33]

https://www.tirerack.com/tires/hankook-dynapro-at2-xtreme

I know you weren't asking for this advice but a 113 load rating is quite a bit lower than OEM 116. Most big tire shops won't even install them for you. Although 2535lbs is more than 2466lbs (Rear GAWR 4932lbs/2), there isn't a lot of buffer there.

 

[Malkozaine]

I know you weren't asking for this advice but a 113 load rating is quite a bit lower than OEM 116. Most big tire shops won't even install them for you. Although 2535lbs is more than 2466lbs (Rear GAWR 4932lbs/2), there isn't a lot of buffer there.

These are the ones I was more looking at, I just want to see if it was possible to go smaller and get the Speedo fixed for it.

https://www.tirerack.com/tires/hankook-dynapro-at2-xtreme

275/60R20 - 115T

Or these:

https://www.tirerack.com/tires/tire...ewall=Blackwall&partnum=76TR0CCLX20&tab=Sizes

 

[Riviot]

https://www.tirerack.com/tires/hankook-dynapro-at2-xtreme

113 load index? You're a ballsier man than I. Rear axle max is 4950, this only gives you 3% safety margin.

 

[Riviot]

These are the ones I was more looking at, I just want to see if it was possible to go smaller and get the Speedo fixed for it.

https://www.tirerack.com/tires/hankook-dynapro-at2-xtreme

275/60R20 - 115T

Or these:

https://www.tirerack.com/tires/tire...ewall=Blackwall&partnum=76TR0CCLX20&tab=Sizes

Stick with those.

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