What size are Pontiac Grand Prix hubcaps?

I was driving the other day and ran over a huge pothole. I thought everything was fine, but after I got home I noticed that one of my hubcaps flew off, so now I need a new one. How big are Pontiac Grand Prix hubcaps?

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Answer provided by
Natalie Todoroff
Answered on Jun 15, 2022
Before you buy any Pontiac Grand Prix hubcaps, you first need to know how big your wheel’s diameter is. Here’s how to read your tire to find your size:
  • Locate the tire number printed on the tire
  • Look towards the end of the number for a capital R
  • Note the two-digit number immediately following the R
That two-digit number is your wheel’s diameter, which will tell you what size Pontiac Firebird hubcap you need to purchase. For example, if your tire reads “R17,” you’ll need to shop for 17 inch hubcaps.
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