The LAST 19 Tire Question
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The LAST 19 Tire Question
I know, this has been discussed A LOT.
Whats not clear to me: Is 225/40-19 better than 245/35-19?
pwdrhound and others have made it clear that the front tires needs to be taller than the rears for the AWD system to work properly. This being the case why are so many people running 245/35s? This tire is still shorter than a 295/30.
The tradeoff is one will have more width for lateral grip and the other is better for AWD performance. What's better to have?
Ive only seen one person choose the 225 and I think its the best option..
225/40-19 - 26.1
245/35-19 - 25.7
295/30-19 - 26
305/30-19 - 26.3
Whats not clear to me: Is 225/40-19 better than 245/35-19?
pwdrhound and others have made it clear that the front tires needs to be taller than the rears for the AWD system to work properly. This being the case why are so many people running 245/35s? This tire is still shorter than a 295/30.
The tradeoff is one will have more width for lateral grip and the other is better for AWD performance. What's better to have?
Ive only seen one person choose the 225 and I think its the best option..
225/40-19 - 26.1
245/35-19 - 25.7
295/30-19 - 26
305/30-19 - 26.3
Last edited by Drew959; Nov 21, 2014 at 02:15 PM.
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Not at all. Maybe others will chime in but I did a LOT of research for 6+ months while I was having the wheels built and picking out tires over last winter and I never ran into any concerns or issues from anyone else running these setups for the driveline drag issue you are asking about.
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If the fronts are spinning at all faster than the rears than the AWD system is rendered useless. If the ratios are close, you won't harm anything but the smaller front wheels will just be providing drive line drag back to the gearbox. It isn't until the rear wheels begin to turn faster than the fronts that any torque can possibly be transmitted to the front wheels, hence the requirement for the rears to be just a hair smaller than the fronts. As the speed of the car increases, the amount of speed difference between the tires increases which in turn causes more torque to be transmitted to the front wheel via the viscous coupler, I think about 35% or so at top speed according to Porsche IIRC.
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I run the Super Sports in 225 and 295. The main reason I chose this set up is because my car sits so low I couldn't fit anything else in the rear. That being said my car handles like a dream. I'm pushing 750HP and take the car to the track 5 times a year and no problems. Good luck!
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I run the Super Sports in 225 and 295. The main reason I chose this set up is because my car sits so low I couldn't fit anything else in the rear. That being said my car handles like a dream. I'm pushing 750HP and take the car to the track 5 times a year and no problems. Good luck!
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No secret. I have a Evo GT700 kit - Club sport intercoolers, gt40 headers, milltek exhaust, after market fuel pump, Hitachi mass air, Throttle body and y pipe, custom tune running 23 psi on pump gas. The car runs well and has never given me any problems. Obviously that's crank HP.
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Joined: Mar 2009
Posts: 109
From: NJ
Rep Power: 25
No secret. I have an Evo GT700 kit - Club Sport intercoolers, gt40 headers, milltek exhaust, upgraded fuel pump and line, Hitachi mass air, throttle body and y-pipe, custom tune, running 23 psi on sunoco ultra. Car runs great never had a problem. I have had these modifications on the car for 15,000 miles. Just rebuilt turbos and put a new clutch in. That's 750+ HP at the crank.
