Trailer Tires: Using Bias Ply as Spare with Radial Tires

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Author Topic:   Trailer Tires: Using Bias Ply as Spare with Radial Tires

mtwilling posted 06-15-2009 10:35 PM ET (US)
My boat trailer has ST205-75R-14 tires on it which are radials. I need a spare tire and rim, but the local sporting goods store has only a bias ply tire in this size. Any reason the bias tire would not make a suitable spare?
Jefecinco posted 06-16-2009 09:00 AM ET (US)
I believe it would serve as a spare. I would use it only long enough to repair or replace the flat or damaged tire.
Trailer tires should be replaced for age related issues when they are between five and eight years old regardless of tread wear. Because it is not always easy to find the sizes required at local tire outlets it's a good idea to locate or order new tires a few weeks earlier than the date you wish to replace them. When the time comes to replace your trailer tires you may want to use one of your existing radial tires for your new spare.
[Changed topic to success in angling. A few replies to this new topic were deleted--jimh.]
JLW posted 06-17-2009 02:55 PM ET (US)
mtwilling, no reason to worry about it, a bias will work fine. I won't bother you with my credentials as a high-speed test driver and development engineer for Firestone Tire & Rubber for 38 years.JLW

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Author	Topic: Trailer Tires: Using Bias Ply as Spare with Radial Tires
mtwilling	posted 06-15-2009 10:35 PM ET (US) My boat trailer has ST205-75R-14 tires on it which are radials. I need a spare tire and rim, but the local sporting goods store has only a bias ply tire in this size. Any reason the bias tire would not make a suitable spare?
Jefecinco	posted 06-16-2009 09:00 AM ET (US) I believe it would serve as a spare. I would use it only long enough to repair or replace the flat or damaged tire. Trailer tires should be replaced for age related issues when they are between five and eight years old regardless of tread wear. Because it is not always easy to find the sizes required at local tire outlets it's a good idea to locate or order new tires a few weeks earlier than the date you wish to replace them. When the time comes to replace your trailer tires you may want to use one of your existing radial tires for your new spare. [Changed topic to success in angling. A few replies to this new topic were deleted--jimh.]
JLW	posted 06-17-2009 02:55 PM ET (US) mtwilling, no reason to worry about it, a bias will work fine. I won't bother you with my credentials as a high-speed test driver and development engineer for Firestone Tire & Rubber for 38 years.JLW