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Triumph SuperSports Triumph Four-Cylinder Enthusists: TT600, Speed4, and Daytona 600/650

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Old 11-19-2012, 02:00 PM   #1 (permalink)
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BT-021 pressures

Was wondering if anyone else was running BT-021 on a tt600 or s4 and what pressures you have them at?
I have had my rear at 42psi and my front at 40psi as i take pillions quite a lot and was surprised when i looked at the recommended pressures in the manual and what pressures people are running at in the tire threads
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Old 11-21-2012, 01:15 AM   #2 (permalink)
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Bridgestones typically run at higher pressures than other tyres, Dan...42psi on the rear sounds spot-on....40psi on the front sounds too high...think 36-38 is more correct...prolly 38psi IIRC.
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Old 11-21-2012, 10:12 AM   #3 (permalink)
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I run 36/42 on my Sprint GT's 021 tires, which is the reccomended tire pressure. My dealer, however, always want to go with slightly lower tire pressures.
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Old 11-21-2012, 11:09 AM   #4 (permalink)
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It depends a bit on what you are doing and what the conditions are like. For every day street riding, going with the manufacturer's recommendations is a good idea. For high performance, carrying loads, or extreme conditions of one kind or another (heat, cold), you may want to adjust pressures. To get a little hotter tire surface, lower pressure. To run a little cooler or carry heavier loads, raise pressures. You will want to check with somebody who knows a whole lot more than me to make sure you have the exact limits of these things, but that's the general idea.
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Old 11-21-2012, 12:08 PM   #5 (permalink)
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For BT21's the best pressure is 0. I know it's a smarta$$ answer, but that's all I got....


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Old 11-22-2012, 05:38 PM   #6 (permalink)
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Thanks guys, i will drop the front down to 38 and just leave the back at 42 as i can't be bothered to change my pressures everytime i gie someone a pillion!
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Old 11-29-2012, 03:06 PM   #7 (permalink)
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Whenever you move from the OEM tire to another brand you must use your new tires' pressure as recommended by the manufacturer. Bridgestone has a number you can call and actually speak to tech. They will give you the proper PSI. 42 sounds a bit high to me.
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