rim and tires auto iv lesson 227. what size rim and tire combination do you use for your ride?
TRANSCRIPT
![Page 1: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/1.jpg)
Rim and Tires
Auto IVLesson 227
![Page 2: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/2.jpg)
What size rim and tire combination do you use for your ride?
![Page 3: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/3.jpg)
How does this handle on the road?What systems would be effected by the size?
![Page 4: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/4.jpg)
Lets talk tech!
• Lets discuss some right and wrong ways to fit rims and tires under a vehicle.
• Using math formulas you already know can improve your ability to advise your friends and family to Ric Rac your Ride!!
![Page 5: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/5.jpg)
Tire Placard
![Page 6: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/6.jpg)
![Page 7: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/7.jpg)
![Page 8: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/8.jpg)
Solving for x
Sidewall Aspect Ratio• Typically following the three digits
identifying the tire's Section Width in millimeters is a two-digit number that identifies the tire's profile or aspect ratio.
![Page 9: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/9.jpg)
P225/50R16 91SThe 50 indicates that this tire size's sidewall height (from rim to tread) is 50% of its section width. The measurement is the tire's section height, and also referred to as the tire's series, profile or aspect ratio. The higher the number, the taller the sidewall; the lower the number, the lower the sidewall. We know that this tire size's section width is 225mm and that its section height is 50% of 225mm.
![Page 10: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/10.jpg)
SIDEWALL HEIGHTHigher the number = higher sidewall
Lower the number = shorter sidewall
![Page 11: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/11.jpg)
By converting the 225mm to inches (225 / 25.4 = 8.86") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of 4.43". If this tire were a P225/70R16 size, our calculation would confirm that the size would result in a section height of 6.20", approximately a 1.8-inch taller sidewall.
![Page 12: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/12.jpg)
Terms to remember
![Page 13: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/13.jpg)
Aspect Ratio
![Page 14: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/14.jpg)
Aspect Ratio = (Section Height/Section Width) X 100
• P225/70 R14 • 225 Millimeters of section width• 70 is interpreted as 70 % of the width to equal
section height.
![Page 15: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/15.jpg)
Overall Diameter= 2 x Section Height + Rim Diameter
• Note that there is top and bottom of section height that need to be added to rim size to determine the over all Diameter.
![Page 16: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/16.jpg)
A truck tire has a p-metric tire label of:LT 265/75 R-17
Find the overall diameter
• Section width = 265 mm• Aspect ratio = 75• Section height = x • Section height =
• 198.75 mm• Rim diameter = 17 inches =
• 431.8 mm • Overall Diameter =
• 829.3 mm• 32.65 in
![Page 17: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/17.jpg)
y = 3x + 10
•Solve for x when y = 19
• 19 = 3x + 10• 9 = 3x• 3 = x
![Page 18: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/18.jpg)
Shop exercises and Worksheets
![Page 19: Rim and Tires Auto IV Lesson 227. What size rim and tire combination do you use for your ride?](https://reader036.vdocuments.us/reader036/viewer/2022081514/5697bfee1a28abf838cb93a6/html5/thumbnails/19.jpg)
Formal Assessment
• Test worksheet