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15 inch wheels on 86 deville


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In 1986,

DeVille could have an optional touring package with handling components and "more aggressive, no-nonsense" look. It included gray rocker moldings and front air dam, rear spoiler, recessed foglamps, body-color taillamp bezels, tighter steering ratio (18.4:1), improved spring rates, a solid front stabilizer bar (standard one was hollow), stronger front lower control arm bushings, a much thicker rear stabilizer bar (18 vs. 12 mm) and 15 in. performance tires on aluminum alloy wheels

Here is a link to that statement

http://motorera.com/cadillac/cad1980/CAD86D.HTM

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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What is the original tire size? Also, what size tire are you planning to run on a 15" rim? That information is needed to figure how much the speedometer will be off.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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Cadillac didn't ever put 14 inch wheels on did they?

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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Using 205 75-R15 tires, your actual speed will be 3.8% faster than the speed displayed. If you installed 205 70-R15 tires on the 15" wheels, your actual speed would be 0.7% faster than the speed displayed on the speedometer. The overall diameter of the 205-70R15 tires will be very close to the OEM 205-75-14 tires.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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