markboris

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Did you change your speedo in ForScan? Looks like the tire size makes a big enough difference to warrant it. I am possibly taking my Mach e south of the boarder and have been looking at the Rally Wheels with the factory size 235/55-19 tires. I have not seen a post where that size was used most go wider. Traditionally Rally vehicles use a narrower tires.

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A few comments on this....

The speedo adjustment in FORScan is very minor as in you can only change up or down one tire size.

Typically the speedo on Mach-E's from the factory shows you going 1 mph faster than you actually are so changing to taller tires will actually get you more in line with the correct speed. I am currently running tires right now that are 29.7" tall (275/40R21) and the speedo reads a little less than 1 mph slower than I am actually going.

I know a few people running 29.7" tall tires up front (245/45R19) and 30" in the rear (255/55R19) which has been working out very well.
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Firefly Ship Works

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A few comments on this....

The speedo adjustment in FORScan is very minor as in you can only change up or down one tire size.

Typically the speedo on Mach-E's from the factory shows you going 1 mph faster than you actually are so changing to taller tires will actually get you more in line with the correct speed. I am currently running tires right now that are 29.7" tall (275/40R21) and the speedo reads a little less than 1 mph slower than I am actually going.

I know a few people running 29.7" tall tires up front (245/45R19) and 30" in the rear (255/55R19) which has been working out very well.
Wouldn't the range increase as well with the smaller wheels? Just wondering if keeping a set of smaller wheels to swap out just for road trips is a worthwhile pursuit.
 

Tigger

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I've said it before and I'll say it again: the beauty in these wheels isn't in their aesthetics, it's in their design, engineering, and racing pedigree. These may not be real OZ racing wheels, but they're a well-executed and sincere homage to them. I love that Ford honored that heritage in their Rally model and sized them to optimize for ride and handling instead of bowing to market pressures and making them too large with too little sidewall like all the other cars on the road. There're a million other options out there for folks with more conventional taste in wheels, but these were made by automotive afficionados for automotive afficionados.
I’ve been thinking of making my own OZ Racing decals and sticking them on the Rally wheels. Would that make it too ricey?
 

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Valid point. I actually did consider an actual winter tire and am generally a proponent of using dedicated winter/snow tires.

I opted for the CC2s because I wanted the option to run these year-round and felt like they're more than adequate for the majority of my winter driving.

The winters here in Massachusetts have been mild with little snow accumulation these past several years. Yes, we still get a decent storm on occasion, but they treat the roads well, and I'm not too concerned about having to drive in a blizzard. If the weather gets too bad, I just won't go anywhere.
Right, but if you were to have two dedicated sets, selecting all weather and all season is like kissing your sister.
 

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Wouldn't the range increase as well with the smaller wheels? Just wondering if keeping a set of smaller wheels to swap out just for road trips is a worthwhile pursuit.
Couldn’t tell you. Not once have I been concerned about range. Never was in my ICE cars and not on this one. I change wheels, tires, lower the car, raise the car and have no idea what effect it has on the range. I’m sure someone else can comment on this. 😊
 


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Wouldn't the range increase as well with the smaller wheels? Just wondering if keeping a set of smaller wheels to swap out just for road trips is a worthwhile pursuit.
If you’re concerned about range during road trips, just slow down a little.
 

Guss-E 2021

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I have 235/55R19s CC2s on my Premium. You might see an efficiency hit (vs OEMs). I've gone from 3+ in good conditions to 2.2 - 3. The lower end only recently which I attribute more to driving faster and cooler temps.

That being said, the CC2s are fantastic on very wet roads and in snow and slush. I live on sloped property. That means when I turn onto the street I'm immediately on an uphill incline with no running start. The OEMs Pilots would slip all the time. Not the CC2s, not even on snow covered, unplowed asphalt.

In NH 😊
 

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Valid point. I actually did consider an actual winter tire and am generally a proponent of using dedicated winter/snow tires.

I opted for the CC2s because I wanted the option to run these year-round and felt like they're more than adequate for the majority of my winter driving.

The winters here in Massachusetts have been mild with little snow accumulation these past several years. Yes, we still get a decent storm on occasion, but they treat the roads well, and I'm not too concerned about having to drive in a blizzard. If the weather gets too bad, I just won't go anywhere.
IMHO people need to stay off the roads when there's a true blizzard/bad storm. Same people feel invincible and end up in a ditch eventually.
 

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Love the CC2's. Last two cars I've immediately taken the OEMs off and put CC2s on. Operate them year round. New England daily driving, many ski days in the winter. Still have the new OEMs in the shed, trying to figure out what to do with them.....one car is a lease will probably swap them back on for turn in.
 

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Wouldn't the range increase as well with the smaller wheels? Just wondering if keeping a set of smaller wheels to swap out just for road trips is a worthwhile pursuit.
In general, a smaller rim/larger sidewall tire combo will result in lower rotating mass and increased efficiency if you stay with the same style of rim, the same make and model of tire, and the same tire width. In reality, the difference is probably less than 10 miles at 100% charge if you use the same style of rims and tires.

The California Rt 1 wheels are both more aerodynamic and smaller diameter than the Premium wheels. You could try to find a set of those somewhere. You should see an efficiency boost in highway driving with those, but minimal change to low speed driving. Those might boost your highway range by maybe 15 miles. Is that worth the added cost of a second set of rims/tires? Do you have room to store them? Are you comfortable jacking up a very heavy BEV with very high torque specs on the lugs? Is the time it takes to swap tires worth the time saved on charging stops when on a road trip?
 

Firefly Ship Works

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In general, a smaller rim/larger sidewall tire combo will result in lower rotating mass and increased efficiency if you stay with the same style of rim, the same make and model of tire, and the same tire width. In reality, the difference is probably less than 10 miles at 100% charge if you use the same style of rims and tires.

The California Rt 1 wheels are both more aerodynamic and smaller diameter than the Premium wheels. You could try to find a set of those somewhere. You should see an efficiency boost in highway driving with those, but minimal change to low speed driving. Those might boost your highway range by maybe 15 miles. Is that worth the added cost of a second set of rims/tires? Do you have room to store them? Are you comfortable jacking up a very heavy BEV with very high torque specs on the lugs? Is the time it takes to swap tires worth the time saved on charging stops when on a road trip?
You have conveniently worded all your questions so I only need to provide one answer for all of them: "No!" :)
 

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I know, I know, they're not everyone's cup o' tea. Even I pooh-poohed them at first, but they've grown on me.

The Rally wheels with 245/55 R19 Michelin CC 2s will be my winter setup.

I have to admit, the ride is much nicer on these tires compared to my 20" PE wheels and 255/45 Continental EC DWS-06 rubber. Not nearly as jarring over crappy NE roads.

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Well done! 👍🏻 Of course I’m a little bias since we own a 2025 Rally with White wheels. Our factory tires are fantastic and surprisingly the wheels clean very easily. I had plenty of white wheel haters but I love them with our molten magenta color and your color combo looks good as well. I keep trying to tell everyone that the trifecta of MagnaRide, lifted springs and the tires make the Rally the best daily driver ever. Handles Austin roads like a champ. Enjoy them this winter ❄
 
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Well done! 👍🏻 Of course I’m a little bias since we own a 2025 Rally with White wheels. Our factory tires are fantastic and surprisingly the wheels clean very easily. I had plenty of white wheel haters but I love them with our molten magenta color and your color combo looks good as well. I keep trying to tell everyone that the trifecta of MagnaRide, lifted springs and the tires make the Rally the best daily driver ever. Handles Austin roads like a champ. Enjoy them this winter ❄
Thank you. Your Molten Magenta Rally looks sick. Love that color!

Rally springs are top o' my mod list once I get my new antisway bars installed. Hoping to swap springs come spring.

I've given serious thought to trading for a Rally, and maybe someday I will, it just isn't in the cards right now.

While we're talking Rally, I find it odd that Ford decided to not only drop Molten Magenta for the '26 MY, but also make the graphite finished wheels the default and charge extra for the white wheels.🤔
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