Style vs comfort
#17
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Yes, the 19" has 1" more diameter, and in turn, the F Sport 9" rear rims have another 1" width for greater added "unsprung" weight.
This unsprung weight increases the momentum imparted onto the body structure for a slightly less comfortable ride.
For the smoothest ride, the unsprung mass of the wheels and tires must be as light as possible, while the sprung mass of the body on the suspension must be as heavy as possible.
A light unsprung mass will also help the rear wheel/tires track bumpy corners.
This unsprung weight increases the momentum imparted onto the body structure for a slightly less comfortable ride.
For the smoothest ride, the unsprung mass of the wheels and tires must be as light as possible, while the sprung mass of the body on the suspension must be as heavy as possible.
A light unsprung mass will also help the rear wheel/tires track bumpy corners.
#18
Lexus Test Driver
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Yes, the 19" has 1" more diameter, and in turn, the F Sport 9" rear rims have another 1" width for greater added "unsprung" weight.
This unsprung weight increases the momentum imparted onto the body structure for a slightly less comfortable ride.
For the smoothest ride, the unsprung mass of the wheels and tires must be as light as possible, while the sprung mass of the body on the suspension must be as heavy as possible.
A light unsprung mass will also help the rear wheel/tires track bumpy corners.
This unsprung weight increases the momentum imparted onto the body structure for a slightly less comfortable ride.
For the smoothest ride, the unsprung mass of the wheels and tires must be as light as possible, while the sprung mass of the body on the suspension must be as heavy as possible.
A light unsprung mass will also help the rear wheel/tires track bumpy corners.
Anyone care to weigh tires and wheels for the debate? No?
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#20
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Not only do the tires affect the ride more, but the air pressures used affect the ride even more so again.
Thus the OP should always be encouraged to check tire pressures before test driving.
Thus the OP should always be encouraged to check tire pressures before test driving.
#22
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+1 also came from a TL. Love the ride with the 18" MXM4's on. Personally I prefer the GS Luxury to the F Sport or the LS460. It seems like the perfect balance for comfort and performance.
#23
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I hope some will find below info useful. I have driven:
2013 Luxury:
. Stock 18 Dunlops: I thought they were good. I give them an 8.
. Replacement 18 Yokohama: It was hard to compare since the Dunlops alread had 30K+ on them (if I remember correctly). The replacement tires were OK at the beginning and as I put more miles on they got better. I give them a number around 8.
2015 F Sports:
. Stock 19 Dunlops: It was a disappointment coming from a luxury model. I can not believe why Lexus even put them on the GS. I give them a 6-7 (my passing grade is 75%
) I don't care if these are made for high performance. The tires are so loud and noisy. They don't quite fit GS (grand touring sedan as Lexus calls it)
. Stock 19 Bridgestones: Significantly better than Dunlops but still noisy compared to both 18s I had before. They got better after a few hundreds miles. I give them a 7-8.
. Michellin 19 PSS: What a difference! Dealership pumped the puppies to 38-39psi but the ride was still so much better than all above tires. I give them 9. I would give them a 10 if they came with wall that provides extra protection for the wheels as found in other tires. Not best looking tires but definitely most comfortable.
2013 Luxury:
. Stock 18 Dunlops: I thought they were good. I give them an 8.
. Replacement 18 Yokohama: It was hard to compare since the Dunlops alread had 30K+ on them (if I remember correctly). The replacement tires were OK at the beginning and as I put more miles on they got better. I give them a number around 8.
2015 F Sports:
. Stock 19 Dunlops: It was a disappointment coming from a luxury model. I can not believe why Lexus even put them on the GS. I give them a 6-7 (my passing grade is 75%
![Big Grin](https://www.clublexus.com/forums/images/smilies/biggrin.gif)
. Stock 19 Bridgestones: Significantly better than Dunlops but still noisy compared to both 18s I had before. They got better after a few hundreds miles. I give them a 7-8.
. Michellin 19 PSS: What a difference! Dealership pumped the puppies to 38-39psi but the ride was still so much better than all above tires. I give them 9. I would give them a 10 if they came with wall that provides extra protection for the wheels as found in other tires. Not best looking tires but definitely most comfortable.
#24
Pole Position
Thread Starter
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I hope some will find below info useful. I have driven:
2013 Luxury:
. Stock 18 Dunlops: I thought they were good. I give them an 8.
. Replacement 18 Yokohama: It was hard to compare since the Dunlops alread had 30K+ on them (if I remember correctly). The replacement tires were OK at the beginning and as I put more miles on they got better. I give them a number around 8.
2015 F Sports:
. Stock 19 Dunlops: It was a disappointment coming from a luxury model. I can not believe why Lexus even put them on the GS. I give them a 6-7 (my passing grade is 75%
) I don't care if these are made for high performance. The tires are so loud and noisy. They don't quite fit GS (grand touring sedan as Lexus calls it)
. Stock 19 Bridgestones: Significantly better than Dunlops but still noisy compared to both 18s I had before. They got better after a few hundreds miles. I give them a 7-8.
. Michellin 19 PSS: What a difference! Dealership pumped the puppies to 38-39psi but the ride was still so much better than all above tires. I give them 9. I would give them a 10 if they came with wall that provides extra protection for the wheels as found in other tires. Not best looking tires but definitely most comfortable.
2013 Luxury:
. Stock 18 Dunlops: I thought they were good. I give them an 8.
. Replacement 18 Yokohama: It was hard to compare since the Dunlops alread had 30K+ on them (if I remember correctly). The replacement tires were OK at the beginning and as I put more miles on they got better. I give them a number around 8.
2015 F Sports:
. Stock 19 Dunlops: It was a disappointment coming from a luxury model. I can not believe why Lexus even put them on the GS. I give them a 6-7 (my passing grade is 75%
![Big Grin](https://www.clublexus.com/forums/images/smilies/biggrin.gif)
. Stock 19 Bridgestones: Significantly better than Dunlops but still noisy compared to both 18s I had before. They got better after a few hundreds miles. I give them a 7-8.
. Michellin 19 PSS: What a difference! Dealership pumped the puppies to 38-39psi but the ride was still so much better than all above tires. I give them 9. I would give them a 10 if they came with wall that provides extra protection for the wheels as found in other tires. Not best looking tires but definitely most comfortable.
#25
Lexus Fanatic
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I'm getting ready to replace the stock Bridgestones on the LS and I'm looking at both those tires, I think I'm going to go with the Pirellis.
#26
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However, I find that the ride is lumpier and thumpier; in other words, not the best for ride comfort...
#27
Pole Position
Thread Starter
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The Bridgestone Turanza Serenity Plus are very light on the power steering, and very quiet too, and apparently less rolling resistance for superior economy too, and very long tread life too.
However, I find that the ride is lumpier and thumpier; in other words, not the best for ride comfort...
However, I find that the ride is lumpier and thumpier; in other words, not the best for ride comfort...
#28
Pole Position
Thread Starter
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Where did you see the Turanza vs Cinturanto comparo?
#29
Lexus Fanatic
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Here are the test results from TireRack, they directly compared the Pirelli Cinturato P7 Plus, the Bridgestone Turanza Serenity, the Continental PureContact, and the Michelin Premier. The Pirellis won in ride and noise.
http://www.tirerack.com/tires/tests/...y.jsp?ttid=188
#30
Pole Position
Thread Starter
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