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Discussion Starter · #1 ·
Been debating on getting new 18 on my 2022 Rs, or 19? 20 not sure. Anyone have any pros or cons s what they would do and why?
 

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2021Trailblazer RS AWD Scarlet Red Metallic
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20's will fit, buy I wouldn't go any bigger. The most important thing to consider is tire size with the new rims. If you don't end up with the same diameter tire as the factory tire your speedometer will be off and GM can void the mileage part of the warranty. As far as I know there currently isn't any way to adjust the tire size in the computer since it's locked by GM. If we had the ability to change sizes then it would be ok to have smaller of larger tires. It's possible GM techs might have the ability to change sizes for you in the computer, but you'd have to ask the service dept if it's even possible.
 

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Discussion Starter · #3 ·
Got it, appreciate the response, yeah 20 not sure. I am not wanting to look like I drove out of a rap video lol.
 

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20's will fit, buy I wouldn't go any bigger. The most important thing to consider is tire size with the new rims. If you don't end up with the same diameter tire as the factory tire your speedometer will be off and GM can void the mileage part of the warranty. As far as I know there currently isn't any way to adjust the tire size in the computer since it's locked by GM. If we had the ability to change sizes then it would be ok to have smaller of larger tires. It's possible GM techs might have the ability to change sizes for you in the computer, but you'd have to ask the service dept if it's even possible.
245x45xR20 is the tire size I found that would be 1" wider, but within a 0.1% difference in diameter, aka the exact same readout!
 

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I would encourage you to not get larger wheels unless you really don’t care about the ride quality and road noise both taking a downgrade (also just seems kind of wasteful to throw out perfectly good tires and a set of machine alloy rims, but that’s just me shrug)
 

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Discussion Starter · #7 ·
Totally get it, not really looking into 20's , more then likely will put new 18's . Personally I just like my vehicle to look different than the next one.
 

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Sorry I'll get a picture tomorrow in the sun. Can't load other pics for dome reason. But running 245/40/20 tires and rides just fine. I prefer them cause they are more of a summer tire and get good grip. Stock tires are garbage for grip (in good weather)
 

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Sorry I'll get a picture tomorrow in the sun. Can't load other pics for dome reason. But running 245/40/20 tires and rides just fine. I prefer them cause they are more of a summer tire and get good grip. Stock tires are garbage for grip (in good weather)
Post up some daytime pictures
 

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Is this a 2021 Trailblazer with 20-inch rims and tires? Seems there is a lot of room left in the wheel wells. I got the 245/40/20 delivered today 2 Jan 2022. can't wait to have them put on my 2022 Trailblazer LT.
 

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Is this a 2021 Trailblazer with 20-inch rims and tires? Seems there is a lot of room left in the wheel wells. I got the 245/40/20 delivered today 2 Jan 2022. can't wait to have them put on my 2022 Trailblazer LT.
Stock rims are gone. Hello to my Milanni Splinter 471 Black Machined rims snuggled nicely inside - Advanta HP Z01 245/40ZR20 tires. I bought my whole package online tires and rims mounted and balanced from Extreme Customs (http://www.extremecustoms.com ). The salesperson was Craig D whole really made sure the specs were right for my 2022 Trailblazer LT trim. What I noticed after installation, the place I had the tires installed, their machine was not able to program the TMP sensors. So, I took them to the Chevrolet dealership and they did TMP sensor programming for free. Took less than a minute to do it. Another event that occurred, is right after I left the dealership the Tracktion Control indicator came on. I scheduled an appointment to have this looked at. But after the restart of the car, it has not returned. Probably some kind of recalibration needed to occur since the new tires were put on. Lastly, the noise factor I have seen in some posts about aftermarket tires. In my honest assessment, the noise may have increased from stock to aftermarket tires by about 1%. My vehicle still rides smooth and as you can see there is plenty of room remaining in the wheel wells. So go and pimp your ride and stand out among the masses!
 

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