# Spare Tire Size Discrepancy Lincoln LS V8 Sport Package **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** ls, lincoln\ **Created:** [November 24, 2012, 7:15pm UTC](https://community.cartalk.com/t/spare-tire-size-discrepancy-lincoln-ls-v8-sport-package/75686 "2012-11-24T19:15:56Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![doctorblue](https://avatars.discourse-cdn.com/v4/letter/d/7c8e57/32.png) [@doctorblue](https://community.cartalk.com/u/doctorblue)\ **Post date:** [November 24, 2012, 7:15pm UTC](https://community.cartalk.com/t/spare-tire-size-discrepancy-lincoln-ls-v8-sport-package/75686/1 "2012-11-24T19:15:56Z")
The recommended tire size for my Lincoln LS 2001 V8 Sport Package is P235/50R17. Tire size recommended for the V8 without the sport package is P215/60R16. My full size spare tire that came with the vehicle new (eons ago) is P215/60R16. I have the 17 inch rims on the car. Is this a problem? Do I need to replace the spare? ---
**Author:** ![lion9car](https://avatars.discourse-cdn.com/v4/letter/l/59ef9b/32.png) [@lion9car](https://community.cartalk.com/u/lion9car)\ **Post date:** [November 24, 2012, 8:13pm UTC](https://community.cartalk.com/t/spare-tire-size-discrepancy-lincoln-ls-v8-sport-package/75686/2 "2012-11-24T20:13:05Z")
The circumference of your regular tire is 82.46 inches (or less as the tire wears). The circumference of your spare tire is 82.15 inches. I assume this is close enough not to cause a problem. ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [November 24, 2012, 8:17pm UTC](https://community.cartalk.com/t/spare-tire-size-discrepancy-lincoln-ls-v8-sport-package/75686/3 "2012-11-24T20:17:00Z")
No, you don’t have to replace the spare. Your spare is the same diameter as the 235/50/17 tire and wheel. In the aftermarket wheel world they call this a “Plus 1” tire and wheel package. The original rim is 16 inches but the tire is a 60 series model. That means the distance from the rim to the tread is 60% of the “215” millimeter width. Multiply that times two and convert to inches (divide by 25.4) and add to the rim diameter and you get the tires total height. The 235/50 is a 50 series, or 50% of 235 mm. That number is smaller so when the additional inch of rim diameter is added in, the total tire height is pretty much the same. Treat it like a temporary spare. The tread is narrower, like those mini spares they use in a lot of cars, so it should be used to get you to a tire repair place to get the 17 incher fixed. It makes a perfect spare, keep it unless you want to do a five-wheel rotation.