Difference between 18" and 20" tires ?

Asked by Jun 03, 2013 at 09:52 AM about the 2008 Chevrolet Tahoe LTZ 4WD

Question type: Maintenance & Repair

Have to replace tires on my 2008 Tahoe LTZ having P265/65R18-112S tires.
I am told that I can select a 20" tires also, what is the difference ?

3 Answers

2 inches. Sure, you can select 20" tires but remember you will have to buy wheels also, and your speedometer will be off. For each turn of the wheel you will be going a little further than the wheel speed sensors 'think' when you go to a larger overall diameter. Other than that you should have no problems, just the added expense if you are willing to pay for four new rims that you will have to have

4 out of 4 people think this is helpful.

If you buy the same profile tire and go to 20" your speedometer will be off by 6.8%.. if your speedo shows 60 you are going 64 (round numbers)

4 out of 4 people think this is helpful.
665

I was going to say "About 2 inches". The guys ahead of me gave you great info. This will also affect the MPG, stopping distance and the amount of pressure put on all the equipment on your axles (brakes, axles, struts, shocks and the like). Otherwise, I don't see any real issues. It'll definitely make the car look very, very nice.

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

Tahoe

Looking for a Used Tahoe in your area?

CarGurus has 27,464 nationwide Tahoe listings starting at $999.

ZIP:

Search Chevrolet Tahoe Questions

Chevrolet Tahoe Experts

#1 Tom Demyan
Tom Demyan
Reputation 770
#2 Rowefast
Rowefast
Reputation 750
#3 Lucia Taylor
Lucia Taylor
Reputation 450
View All

Related Models For Sale

Used GMC Yukon
362 Great Deals out of 17,031 listings starting at $2,500
Used Chevrolet Suburban
330 Great Deals out of 18,890 listings starting at $2,295
Used Cadillac Escalade
244 Great Deals out of 10,835 listings starting at $3,000
Used Chevrolet Silverado 1500
1,758 Great Deals out of 167,455 listings starting at $1,800
Used Ford Expedition
382 Great Deals out of 25,325 listings starting at $1,750
Used Ford Explorer
811 Great Deals out of 74,885 listings starting at $750
Used Ford F-150
2,240 Great Deals out of 209,421 listings starting at $1,499
Used Toyota 4Runner
252 Great Deals out of 20,498 listings starting at $1,995
Used Jeep Grand Cherokee
999 Great Deals out of 73,081 listings starting at $950
Used GMC Yukon XL
249 Great Deals out of 11,902 listings starting at $1,999
Used Dodge Durango
242 Great Deals out of 22,827 listings starting at $1,500
Used GMC Acadia
509 Great Deals out of 46,604 listings starting at $3,900
Used GMC Sierra 1500
835 Great Deals out of 66,316 listings starting at $1,995
Used Dodge Charger
279 Great Deals out of 26,813 listings starting at $2,250
Used Nissan Armada
113 Great Deals out of 8,916 listings starting at $2,500

Used Cars For Sale

2016 Chevrolet Tahoe LTZ 4WD For Sale
7 Great Deals out of 679 listings starting at $43,500
2015 Chevrolet Tahoe LTZ 4WD For Sale
7 Great Deals out of 602 listings starting at $34,990
2014 Chevrolet Tahoe LTZ 4WD For Sale
7 Great Deals out of 153 listings starting at $29,000
2013 Chevrolet Tahoe LTZ 4WD For Sale
10 Great Deals out of 324 listings starting at $21,539