changing tire sizes

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  #1  
Old 11-19-10, 02:17 PM
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Question changing tire sizes

07 Merc Grand marguis rear-wheel drive. With the price of new tires I am looking for used snowtires. My car's original size is 225/60R/16. If I put 215/60R/16 on the back, will this adversly affect the ABS, traction control etc. Thankx. Debbie
 
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Old 11-19-10, 02:37 PM
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I believe you should change all 4 tires for multiple reasons. Run 4 snows in the winter and 4 all seasons the rest of the year. They should be the same size.
 
  #3  
Old 11-19-10, 02:59 PM
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You want the tires to be the same height, what you proposed will not, probably would be closer if you went with 215/65R/16 tires but the decrease in width will probably help

Put 185/65R/15 snow tires on some new steel wheels to replace the 205/55R/15 tires on her old Prelude and it turned a pig on snow and ice into a great car. My buddy at the tire shop did the reasearch to make sure the tires were the same height and the narrower wheels would pose no problems
 
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Old 11-19-10, 03:12 PM
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(Question) will this adversly affect the ABS, traction control etc.

Hello Debbie,

Answer is a definite no!
 
  #5  
Old 11-19-10, 08:06 PM
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here's tire sizes that will work for your vehicle:

Plus Zero
205/65-16
205/70-16
215/65-16
235/60-16
255/55-16
Plus One
215/55-17
215/60-17
225/55-17
235/50-17
235/55-17
245/50-17
255/50-17
Plus Two
215/55-18
225/50-18
235/45-18
235/50-18
245/45-18
255/45-18
Plus Three
225/45-19
235/40-19
235/45-19
245/40-19
255/40-19
Plus Four
245/35-20
255/35-20

also, this is a very helpful calc:
Tire Dimensions Made Simple - Discount Tire

i said it before - craigslist is about the best place to buy tires. but it takes cash and persistence.
i just bought a pair of steel rims with basically new studded tires on them for 70 bucks each, balancing/mounting included. wintercats. they are new anywhere between 110 to 200 new, w-out wheel.
we have several mexican operated tire places around here, it came from one of them. you prolly have same around your area. they usually operate around major junk yards.
 
  #6  
Old 11-19-10, 08:09 PM
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btw, traction control operates off brake rotors. as far as you are not messing with rotors/sensors, you are not really messing with t-control.
as far as it is not a 4x4 vehicle, minor size variations are ok ON MY BOOK. on 4x4, size discrepancy will lock and damage transfer case. not as much important on AWD vehicles
 
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