Can I put 245/40/19 on my 2003 Ford Explorer?

Tiny
MANDADUDE35
  • MEMBER
  • 2003 FORD EXPLORER
  • 4.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
My vehicle listed above has 245/70/16 on it right now. But I have 245/40/19 tires and rims I want to put on it would it be okay and safe? Would it cause issues or damage?
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Wednesday, April 7th, 2021 AT 3:44 PM

3 Replies

Tiny
STEVE W.
  • EXPERT
Well, they should fit but you will have a speedometer/odometer that is almost 10 percent slow so 55 MPH on the speedometer will be closer to 50 MPH, but be prepared for it to ride like a lumber wagon and likely rim and tire damage if you live in an area with potholes and bad roads as the lower side walls transmit a lot of the road feel through the rims. The smaller tires will also mean reduced fuel mileage as it's the same as having a lower gear ratio.
So the engine will be turning faster to go the same speeds.
The bigger thing will be if the new rims have the same offset as the OEM in the first image, many people put on rims that push the tires out away from the hubs like the second image. That will do a lot of things, most of them not good. The steering radius will change because the tire is not pivoting on the axis of the steering knuckle, instead it now moves in an arc around it, next it will increase the stress on the wheel bearings a lot because of the leverage the offset on the rims causes. It also increases the likelihood of lug stud failure for the same reason and will not help with steering linkage wear. Lastly, because the tire now moves in an arc it will usually hit the body on sharp turns.
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Wednesday, April 7th, 2021 AT 6:07 PM
Tiny
MANDADUDE35
  • MEMBER
Okay, thank you so much for answering my question. It helped me a lot. I won't get those rims and tires because I don't want to deal with the issues.
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Thursday, April 8th, 2021 AT 12:30 PM
Tiny
STEVE W.
  • EXPERT
You are welcome. Thank you for using 2CarPros.
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Thursday, April 8th, 2021 AT 12:48 PM

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