All-Season Tires for RC 350 F Sport RWD
#1
Driver School Candidate
Thread Starter
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I've recently placed an order for a 2019 RC 350 F Sport RWD to replace my 2015 IS 350 F Sport RWD and I'm trying to determine the best option for all-season tires as this will be my daily driver. Unfortunately, the original equipment tire sizes do not line up with any direct-fit all-season tire options. I'm interested in hearing advice from others who have more experience with this.
The average winter temperatures (Dec, Jan, Feb) here in Oklahoma range from 30 to 50 degrees and occasionally dip into the teens, which can be quite sporty with summer tires. I know the low temperatures can also damage the summer tire compound. I've considered swapping to winter tires during the cold months, but that seems like overkill for the few days of bad weather we may get. There are also the random warm weather days during the winter, which aren't great for winter tires either.
Original equipment tire specs are:
Front 235/40R19 96Y
Rear 265/35R19 94Y
I've come up with two options:
Plus zero sizing -
Michelin Pilot Sport A/S 3+
Front 245/40R19 98Y
Rear 275/35R19 96Y
Mismatched speed rating -
Goodyear Eagle F1 Asymmetric All-Season (possibly identical to Dunlop Signature HP)
Front 235/40R19 96W
Rear 265/35R19 94Y
I've read that having mismatched speed ratings can cause unpredictable handling characteristics. So, I'm leaning towards using the plus zero sizing, for which the diameter is 1.19% off for the front and 1.05% off for the rear.
Can the Revs/Mile be adjusted with Techstream?
I don't think there will be a fitment issue, but has anyone used the sizes I'm considering with the factory wheels?
The average winter temperatures (Dec, Jan, Feb) here in Oklahoma range from 30 to 50 degrees and occasionally dip into the teens, which can be quite sporty with summer tires. I know the low temperatures can also damage the summer tire compound. I've considered swapping to winter tires during the cold months, but that seems like overkill for the few days of bad weather we may get. There are also the random warm weather days during the winter, which aren't great for winter tires either.
Original equipment tire specs are:
Front 235/40R19 96Y
Rear 265/35R19 94Y
I've come up with two options:
Plus zero sizing -
Michelin Pilot Sport A/S 3+
Front 245/40R19 98Y
Rear 275/35R19 96Y
Mismatched speed rating -
Goodyear Eagle F1 Asymmetric All-Season (possibly identical to Dunlop Signature HP)
Front 235/40R19 96W
Rear 265/35R19 94Y
I've read that having mismatched speed ratings can cause unpredictable handling characteristics. So, I'm leaning towards using the plus zero sizing, for which the diameter is 1.19% off for the front and 1.05% off for the rear.
Can the Revs/Mile be adjusted with Techstream?
I don't think there will be a fitment issue, but has anyone used the sizes I'm considering with the factory wheels?
#2
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Note: no "tech questions" - I'm no expert. I was, though, told not to worry about the speed ratings unless I'm going to drive over 100MPH. I'm not.
I have the following, bought from Tire Rack and installed locally:
235/40R-19 GOODYEAR EAGLE F1 ASYMMETRIC ALL-SEASON XL
265/35ZR-19 GOODYEAR EAGLE F1 ASYMMETRIC ALL-SEASON
The ride is responsive, and quieter than (what I thought were) the horrible stock ones, but still with good road feel. MUCH longer tread life as well.
I have the following, bought from Tire Rack and installed locally:
235/40R-19 GOODYEAR EAGLE F1 ASYMMETRIC ALL-SEASON XL
265/35ZR-19 GOODYEAR EAGLE F1 ASYMMETRIC ALL-SEASON
The ride is responsive, and quieter than (what I thought were) the horrible stock ones, but still with good road feel. MUCH longer tread life as well.
#5
Pole Position
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Just an update, but I put Michelin Pilot Sport A/S 3+ Front 245/40R19 98Y and Rear 275/35R19 96Y on my RWD RC last week and they are fantastic. The stock dunlop summer tires were awful and the all-seasons are perfect for OK. I feel like our cars can really take advantage of the wider tires too.
#6
Driver School Candidate
Thread Starter
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Just an update, but I put Michelin Pilot Sport A/S 3+ Front 245/40R19 98Y and Rear 275/35R19 96Y on my RWD RC last week and they are fantastic. The stock dunlop summer tires were awful and the all-seasons are perfect for OK. I feel like our cars can really take advantage of the wider tires too.
If you don’t mind, I have some follow-on questions. Did they have to adjust the speedometer calibration for the slight difference in diameter? Have you noticed a difference in steering feel? Do the front tires still clear the fenders throughout their range of motion?
#7
Pole Position
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Thank you so much for that feedback. I’m still waiting for a build date and I appreciate getting more information while waiting. That’s still the set that I’m leaning towards the most, even if it’s not a direct fit, because I’ve always been rather happy with Michelin tires.
If you don’t mind, I have some follow-on questions. Did they have to adjust the speedometer calibration for the slight difference in diameter? Have you noticed a difference in steering feel? Do the front tires still clear the fenders throughout their range of motion?
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#8
Driver School Candidate
Thread Starter
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Just wanted to follow-up on this. I had the following tires mounted last week:
Michelin Pilot Sport A/S 3+
Front 245/40R19 98Y
Rear 275/35R19 96Y
They are quieter, grippier, and cheaper than the OEM while being all-season. There is a marked improvement in the ride quality with these tires and there are no issues with tire fitment or speedometer readings (I compared GPS speed to the speedometer at 80+ mph).
Michelin Pilot Sport A/S 3+
Front 245/40R19 98Y
Rear 275/35R19 96Y
They are quieter, grippier, and cheaper than the OEM while being all-season. There is a marked improvement in the ride quality with these tires and there are no issues with tire fitment or speedometer readings (I compared GPS speed to the speedometer at 80+ mph).
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FUZCO (10-25-19)
#9
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Just wanted to follow-up on this. I had the following tires mounted last week:
Michelin Pilot Sport A/S 3+
Front 245/40R19 98Y
Rear 275/35R19 96Y
They are quieter, grippier, and cheaper than the OEM while being all-season. There is a marked improvement in the ride quality with these tires and there are no issues with tire fitment or speedometer readings (I compared GPS speed to the speedometer at 80+ mph).
Michelin Pilot Sport A/S 3+
Front 245/40R19 98Y
Rear 275/35R19 96Y
They are quieter, grippier, and cheaper than the OEM while being all-season. There is a marked improvement in the ride quality with these tires and there are no issues with tire fitment or speedometer readings (I compared GPS speed to the speedometer at 80+ mph).
#10
Driver School Candidate
Thread Starter
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I find them to be quieter than the stock Dunlop on the roads I travel, though I should mention that these tires are not broken in yet. The ride is more comfortable and concrete highways with rough breaks between slabs are also quieter than before.
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