: Has anyone ever changed the 17" wheels to 16" to save money?

05-11-12, 10:08 AM
If so I'd like to hear what you've done. Does any previous Seville or other Cadillac wheels fit? The only tires I use are ContiExtremes, I feel it is the perfect tire for year round driving including snow. Right now I pay about $130 each for my Toyota Avalon but am concerned with facing a price tag of $176 and $182/front and rear tires on an STS. While it looks great I think the new price tag is absurd for 17" tires.

05-11-12, 10:58 AM
Some folks will suggest if your that worried about the cost of 17' tires, why did you get a cadillac in the first place (I have to admit, the thought crossed my mind)? How much money would you save over the period of time you'll own it? In contrast some spend a great deal of money customizing by installing larger wheels and low profile tires. I've never read of anyone placing smaller wheels on the current sts to save money on the cost of tires. Personally, I wouldn't consider it. If the money is that high of a priority (Which I'm not knocking), you might consider a less expensive car that gets twice the mpg and has smaller tires. The right decision is really based on what you value more, saving money, esthetics, big car vs small car, etc.

05-11-12, 11:06 AM
You also have to know whether a 16 will clear the brake caliper (or not); besides, relating to the difference in price, 200 dollars over a couple years (the life of a set of tires?) is not that much.

05-11-12, 11:19 AM
At 40,000 miles per set of tires, that comes out to $.005 per mile, or a half a penny a mile. For me that equates to about $66 per year. I'll keep my aesthetically pleasing and appropriate 17" stock wheels (beauty is in the eyes of the beholder)!

05-11-12, 01:15 PM
Good points! I don't currently have a STS, am thinking of getting one. As mentioned in my original post, I'm currently driving an Avalon which is about as big as the STS. I had a 2003 Seville years ago with the Northstar and I love it and am thinking of going back to the STS. My Seville was a year before they went to the 17" wheels which was fortunate for me. I'm planning on getting a newer Avalon or the STS and both cars now come with 17"s. Either way I will have to deal or the Avalon I know I can put 16" Avalon wheels on because it's only the higher models that come with the 17"s.

With the points mentioned here I guess I can probably deal with the 17"s if I have to but I was interested in options and if there were any available.

05-11-12, 02:40 PM
At 40,000 miles per set of tires, that comes out to $.005 per mile, or a half a penny a mile. For me that equates to about $66 per year. I'll keep my aesthetically pleasing and appropriate 17" stock wheels (beauty is in the eyes of the beholder)!

That's a half penny per 100 miles.

05-11-12, 03:46 PM
That's a half penny per 100 miles.

$200 divided by 40,000 miles = $.005 (one half of a penny) and to check my work

$.005 (half a penny) x 40,000 miles = $200

Unless I'm missing the boat regarding my math .... I stand by half a penny per mile.

Charles Warren
05-13-12, 11:12 AM
I want 18 inch oem sts wheels, and funny my 22 inch tires are cheaper than my 17 inch tires. So get bigger rims :) j/p smaller sidewalls on the 17s would yield better performance over the 16s fatter sidewall 235/50/17 vs 225/60/16 or even 255/45/17 vs 235/55/16

05-13-12, 11:32 AM
16s wont clear JE5 brakes

05-13-12, 12:10 PM
The only reason I'd look for smaller wheels, personally, is for dedicated snows.

Don't live in the CO high-country, anymore though.

Then again, I think 17-inchers are just fine. I have no desire to feel any more pavement imperfections.

05-13-12, 07:40 PM
Over 2 years ago, my set of Conti-DWS 235/50R18 were $715 from Tire Rack. Locally balanced (Hunter) and installed brought the total to $800. They are nice tires but all-seasons are a compromise. My wife's car handles better on Winter Blizzaks & Summer Conti-DW.

05-14-12, 02:22 PM
Wheels from 2003-2007 CTS and all years of the RWD STS (2005-2011) will fit, except for the 6 lug wheels that came with the Bembro brakes 7 all season tire & wheel performance package. Those will obviously not take a 17" regular STS wheel.

You would need to get the correct 17" tire to keep the same diameter as your 18s had, probably 235-50-17 - as per tirerack.com.

Original 18" tire sizes are 235-50-18 front and 255-45-18 rear.

The summer tire performance package had 255-45-18 all the way around, but it had those 6 lug wheels!

05-14-12, 10:06 PM
Thanks for the great points. If I do decide to go with the STS I guess I will just stick with the 17's. I can't imagine going with 18's. Lol. The more I look at the other cars on my list the more I feel I want an STS. The car is a testimonial to what the Americans can build. I say that because I am generally more into foreign cars.

05-25-12, 11:44 PM
The 17" polished 7 spoke wheel on the 2005-2011 STS is a Very nice looking wheel. My wife had the same wheels on her 2005 CTS; they shine up beautifully (almost like a chrome wheel) and the tires are much more reasonably priced than the 18s.

animal mike
05-26-12, 12:10 AM
my 2 cents worth, get the sts and shine it up and DRIVE IT the designers got it right

05-27-12, 11:04 PM
Tirerack is your friend.

Keep your eyes open for deals. Additionally, more performance options are available for 17" than 16"