It could be that the alignment: caster, camber and particularly the toe in was set incorrectly.
How Your Vehicle's Wheel Alignment Affects Fuel Economy
-
Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
Replacement Tires for 19" wheels
- Thread starter essaunders
- Start date
How Your Vehicle's Wheel Alignment Affects Fuel Economy
whisperingshad
Active Member
Look for signs of uneven tire wear as you put on miles.
Also, one of the Electric Drive GT tires could be defective, out of round. You would probably notice this as additional vibration at higher speeds.
Last edited:
whisperingshad
Active Member
Interesting. I've seen other folks running with 255/50R19 (instead of 255/45R19). Are you thinking that the rub would be due to the increased width (to 265, when turning the wheel) or the increased diameter (to 50 instead of 45).
I'm trying to kill two birds with one stone: the increased sidewall to increase ride quality (50 vs. 45) and the increased width to avoid curb rash (265 instead of 255). Hence 265/50R19 on the stock Gemini's on my MYLR using stock suspension.
Thanks,
Scott
--
MYLR | Red ext | White int | 19" | 5 seats | tow | no FSD | made/delivered Oct 2021
It's the overall diameter that im guessing could rub. And ive yet to read/see anyone running that sizing.
Jigglypuff
Member
Did the weather change or did you add extra weight to the vehicle? Wait till you have 4k on the tires and then look at the average. I saw a similar change with CC2s but after a couple thousand miles it's now about the same as the stock tires.
Thanks. This thread:
https://teslamotorsclub.com/tmc/threads/255-50r19-quatrac-pro-on-gemeni-w-pics.252664/#post-6280383
talks about 255/50R19 on Geminis, so the
Edit: nope. going from 255 to 265 width also increases the diameter from 29.0 to 29.4 inches. So I have to stick with 255/50R19. See Post #113.
Scott
--
MYLR | Red ext | White int | 19" | 5 seats | tow | no FSD | made/delivered Oct 2021
Last edited:
it's both diameter (height) and width that must be considered, and then wheel offsets.
On my MYLR, in addition to the OEM Gemini set, I run a 2nd set of 18" BFG Trail-Terrain tires on M3 Aero wheels for some minor off-road needs that are 255/55/18.
The M3 18" Aero wheels were purchased for a song on this TMC site.
The tires just kiss the front wheel liners when at full lock (turn), leaving a 1"x1" rub patch.
That's not any big deal since you're never at speed when at full lock.
They most definitely provide a slightly more comfortable ride.
They are about the limit of tire diameter. The limiting factor is the front suspension steering knuckle. I think max would be 29.25 but that's pushing it.
To get better width clearance, you must consider a different wheel offset.
Use the website
Tire Size Calculator
The best tire size calculator. Use our tire size calculator to find tire size specs and suggested tire sizes. Then check prices for all available tire sizes.
it's both diameter (height) and width that must be considered, and then wheel offsets.
On my MYLR, in addition to the OEM Gemini set, I run a 2nd set of 18" BFG Trail-Terrain tires on M3 Aero wheels for some minor off-road needs that are 255/55/18.
The M3 18" Aero wheels were purchased for a song on this TMC site.
The tires just kiss the front wheel liners when at full lock (turn), leaving a 1"x1" rub patch.
That's not any big deal since you're never at speed when at full lock.
They most definitely provide a slightly more comfortable ride.
They are about the limit of tire diameter. The limiting factor is the front suspension steering knuckle. I think max would be 29.25 but that's pushing it.
To get better width clearance, you must consider a different wheel offset.
Use the websiteto help guide your tire selections.Tire Size Calculator
The best tire size calculator. Use our tire size calculator to find tire size specs and suggested tire sizes. Then check prices for all available tire sizes.tiresize.com
Ah... a wider tire also increases the diameter. I hadn't thought that was the case.
Thanks! I'll stick with putting 255/50R19 on my Gemini.
Link from tangible1 post #112.
Scott
--
MYLR | Red ext | White int | 19" | 5 seats | tow | no FSD | made/delivered Oct 2021
Last edited:
that's roughly my plan when the OEM Conti's get replaced. That will be a while though.
You should also be aware that many tire shops won't install non-std tire sizes, or will balk at the purchase or mounting request. Insurance reasons.
I told the shop to install ONE TIRE so we could test fit it.
When it was shown to fit, everyone was happy.
Jigglypuff
Member
it's both diameter (height) and width that must be considered, and then wheel offsets.
On my MYLR, in addition to the OEM Gemini set, I run a 2nd set of 18" BFG Trail-Terrain tires on M3 Aero wheels for some minor off-road needs that are 255/55/18.
The M3 18" Aero wheels were purchased for a song on this TMC site.
The tires just kiss the front wheel liners when at full lock (turn), leaving a 1"x1" rub patch.
That's not any big deal since you're never at speed when at full lock.
They most definitely provide a slightly more comfortable ride.
They are about the limit of tire diameter. The limiting factor is the front suspension steering knuckle. I think max would be 29.25 but that's pushing it.
To get better width clearance, you must consider a different wheel offset.
Use the websiteto help guide your tire selections.Tire Size Calculator
The best tire size calculator. Use our tire size calculator to find tire size specs and suggested tire sizes. Then check prices for all available tire sizes.
The top knuckle in the front is the main issue. No real issues in the rear with going larger, other than matching tire sizes of course. However, if you change the offset or add spacers, you'll end up with more rubbing at the limits of steering. Then you need to do some body mods or be satisfied with a super limited steering radius. No changing that suspension piece, either, short of massive engineering and fabrication skills.
I have the 1.75 inch MPP lift kit installed and I wonder how that affects my options. Will the knuckle still be the limiter, or will I have a little more room for taller/wider? I might have to experiment I know, but if there's anyone out there who knows for sure...I would really like a little taller sidewall. Of course, 29s will fit, but could I go further or will it likely rub in a turn?
the front upper knuckle is the limiter.
you can measure the gap between your current tire and that knuckle to get some understanding of the room you've got.
I put pics with a tape measure showing how much clearance is available in my thread referenced above as well.
255/50r19 quatrac pro on Gemeni w pics
Very early review (10 miles), I'll post more later. I replaced my OEM tires at 22k miles. The rears had 4/32 (9/32 new) and the fronts had 4.5/32. I wanted a better tire for the snow. 1. The taller tire seems to fit. Any larger or a more square shoulder, and it'd hit the control arm (see pics)...
teslamotorsclub.com
Similar threads
