19's front - 20's rear ...?

[JimiHendrix]

Anyone running this set up -

19x10 front - with 20X11 rear, on a DarK Horse Premium HP

Any problems, issues - recommend or not ...?

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[Skye]

https://tiresize.com/comparison/

https://tiresize.com/

https://akalloys.co.uk/pages/rim-wi...2gTSyOorHJNoYgFRCCNmsPgNC6JhMnh56RpXRR-uatwc9

I'd want to study the circumference differences first, how they compare to the factory-supplied wheels and tires. I try to stay within 3%.

Appearance is subjective. There are several 19/20 photos and threads available when searching the Inet for the following: "car with 19 inch front and 20 inch rear". Some cars, it was hardly noticeable. Others, it looked a little weird. Not just the size of the rim, but the shape and style are at play. YMMV.

Edit,

Added the attached, created by Sponsor www.dragracingwheels.com

 

[robvas]

What's the advantage?

 

[Frogdog1]

Ghetto.

 

[MAT1955]

IMO - no advantage, bad idea.

 

[DevilDog]

I've been thinking about doing the same thing to change the stance on my car. I currently have 325/35/19's on the rear. I'm guessing that 20" wheels would probably make a slight difference in performance since it's a larger rotating mass. There are a number of performance cars that have a larger diameter tire on the rear including Corvette, Porsche, and Viper.

 

[Sofa King]

I have considered the same... I think front diameter of 27" and rear 28" will keep close to same as factory staggered setup and the sidewall heights front and rear would be the same for proper look.

 

[Skye]

https://www.mustang7g.com/forums/threads/pre-collision-assist-cruise-control-problem.170023/

Problems with ride height interfering with the electronics are mentioned in this thread. I feel it's worth reading through and being aware of the instance.

 

[Sofa King]

https://www.mustang7g.com/forums/threads/pre-collision-assist-cruise-control-problem.170023/

Problems with ride height interfering with the electronics are mentioned in this thread. I feel it's worth reading through and being aware of the instance.

Yeah, I have seen that, hence the diameters I mentioned are very close to stock GT PP or DH staggered setup... 27" front 27.7" rear with the stock p zeros.

 

[DevilDog]

https://www.mustang7g.com/forums/threads/pre-collision-assist-cruise-control-problem.170023/

Problems with ride height interfering with the electronics are mentioned in this thread. I feel it's worth reading through and being aware of the instance.

Very good point. I hadn't thought about that. I wonder what the folks who go from 19's to 20's on all four corners do.

 

[robvas]

Very good point. I hadn't thought about that. I wonder what the folks who go from 19's to 20's on all four corners do.

Wheel size doesn't matter it's overall tire height

 

[Dave2013M3]

Past SVT Cobras ran staggered not only front and rear in diameter but also in width. BMW recent M cars also run 19 in front and 20in rears. I think you would be fine.

My M2 with 19" front and 20" rear from the factory.

 

[DevilDog]

Past SVT Cobras ran staggered not only front and rear in diameter but also in width. BMW recent M cars also run 19 in front and 20in rears. I think you would be fine.

My M2 with 19" front and 20" rear from the factory.

Thanks. Gorgeous M2.

 

[Ken H.]

Yeah, I have seen that, hence the diameters I mentioned are very close to stock GT PP or DH staggered setup... 27" front 27.7" rear with the stock p zeros.

I’m one of those experiencing electronic problems due to wheel/ tire changes. I went with 20x10 285/35/20 front & 20x11 305/35/20 rear. I lost my pre-collision assist & both types of cruise control. Ford said it was due to larger diameter tires in front affecting the windshield camera that views the road & provides data for the computer. Switched back to stock DH HP 19” setup & problem resolved. Ran all summer & Fall. When cold weather came, put 20’s back on with 285/30/20 fronts (almost same diameter as stock 19’s). Problem back. I haven’t taken it in yet. Not sure if I have to go to 275’s front, or change rears to 295’s with similar diameter to stock 19’s to lower the rear. Also, another person had lost pre-collision & cruise without changing wheels/tires & it turned out to be a wheel sensor.
All I know is that I wish I had just stuck with the original 19’s even if it meant having to go with “skinnier” all season tires. BEWARE.

 

[Tripower]

Ford said it was due to larger diameter tires in front affecting the windshield camera that views the road & provides data for the computer.

There may be a way to re-align that camera as on modern cars with cameras, if you have a windshield replaced, they need to do a high-dollar recalibration to make sure everything aligns with the new glass. You might try asking a windshield replacement business about it to see if there is any flexibility with that process.

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