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Discussion Starter · #1 ·
Our 76 Calais calls for 235-75 R15 tires. We have a chance to pick a bargain pair of 225-70 R15. Does anyone know if there is any problem putting these on the car?

Thanks in advance,
Bob
 

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Discussion Starter · #4 ·
Katshot said:
Anytime you want to change tire size, I would suggest going to http://www.tirerack.com
and checking the tire dimensions first. Off the top of my mind, I would say that your tire choice should be fine but remember that the 70's will be a little lower (smaller diameter) , but wider, so the wheel wells will seem even LESS filled-up with the 70's.
I used to do the "75-series" to "70-series" swap on ALL my cars but I also made sure to "fill them wheel wells" by staying with the same (or larger) first number. (example: stay with the 235's and don't drop to a 225)
Thanks guys. Just so I am clear...if we drop from 235/75/15 to 235/70/15 this will work fine...in otherwords, will it effect the ride, safety or tread life.

Thanks,
Bob
 

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Discussion Starter · #8 ·
Katshot said:
That depends more on the tire type, and manufacturer than the size (especially only changing just one size).
The size change will provide you with a slightly lower profile, but slightly wider tire. Generally this slight size change will not give you a problem. All things being equal, the ride MAY end up being slightly firmer with the added benefit of better handling.

Thank you Kevin, I appreciate your advice.
Bob
 
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