Aftermarket Wheel Showcase - 3ISx Exclusive
01-24-19, 12:24 PM
#1546
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my vehicle is lowered on coils. currently no gaps all around. i would like to run 225/45 on 8.5 width or 235/45 on 9 width? and 255/40.
whats the best size for fitment with low issue? can i run 18x9 offset 30 to 35 and 18x9.5 offset 30 to 35? also 19x9 offset 30 to 35 and 19x9.5 offset 30 to 35. im debating either 18 or 19 inch. Thanks for helping!
whats the best size for fitment with low issue? can i run 18x9 offset 30 to 35 and 18x9.5 offset 30 to 35? also 19x9 offset 30 to 35 and 19x9.5 offset 30 to 35. im debating either 18 or 19 inch. Thanks for helping!
For the rear, 18x9.5 would need need an offset of 38-42.
For the 19's you'd be looking at roughly the same offsets.
Assuming the circumferences are all the same, the difference is where the sidewall lands. With the 18's the sidewall will have a little more round to it than the 19's.
With that little bit more rounding of the sidewall, it will give you more clearance when the suspension compresses.
I notice you are looking at a higher sidewall high, and reason why?
01-24-19, 12:40 PM
#1547
If you're aiming for 18's, then an 18x9 with a 30-35 offset would be good for the front...closer to the 35 the better
For the rear, 18x9.5 would need need an offset of 38-42.
For the 19's you'd be looking at roughly the same offsets.
Assuming the circumferences are all the same, the difference is where the sidewall lands. With the 18's the sidewall will have a little more round to it than the 19's.
With that little bit more rounding of the sidewall, it will give you more clearance when the suspension compresses.
I notice you are looking at a higher sidewall high, and reason why?
For the rear, 18x9.5 would need need an offset of 38-42.
For the 19's you'd be looking at roughly the same offsets.
Assuming the circumferences are all the same, the difference is where the sidewall lands. With the 18's the sidewall will have a little more round to it than the 19's.
With that little bit more rounding of the sidewall, it will give you more clearance when the suspension compresses.
I notice you are looking at a higher sidewall high, and reason why?
01-24-19, 12:48 PM
#1548
Lexus Test Driver
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The stock F Sport tires are 225/40 18 and 255/35 18.
The F Sport rims are 18x8 and 18x8.5.
For 19's, you're probably looking at a 35 sidewall in the front and 30 in the rear. But still depends on what size tire you're using.
The F Sport rims are 18x8 and 18x8.5.
For 19's, you're probably looking at a 35 sidewall in the front and 30 in the rear. But still depends on what size tire you're using.
Last edited by Sasnuke; 01-24-19 at 12:51 PM.
01-24-19, 01:07 PM
#1549
ohh ok. do you have any recommendation on tire sizing? Thanks for help and info!
01-24-19, 01:31 PM
#1550
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This is a tire sizing guide I gave to someone else. As is states in the first 19 inch recommendation below, offset will be dependent on the manufacture.
I don't have one for 18's prepared as usually folks stay close to the OEM specs if they go with aftermarket 18's.
Stock F-Sport Wheel specs
18X8 +40 225/40/18
18X8.5 +50 255/35/18
19 inch upgrade with staggered fitment (to keep the exact same tire circumference as the stock 18 inch wheels - no offset as that is wheel manufacturer specific):
19X8.5 225/35/19
19X9.5 255/30/19
19 inch upgrade with staggered fitment - with plus size on tires:
19X8.5 235/35/19
19X9.5 265/30/19
19 inch upgrade with staggered fitment - with plus plus size on tires:
19X8.5 245/35/19
19X9.5 275/30/19
I don't have one for 18's prepared as usually folks stay close to the OEM specs if they go with aftermarket 18's.
Stock F-Sport Wheel specs
18X8 +40 225/40/18
18X8.5 +50 255/35/18
19 inch upgrade with staggered fitment (to keep the exact same tire circumference as the stock 18 inch wheels - no offset as that is wheel manufacturer specific):
19X8.5 225/35/19
19X9.5 255/30/19
19 inch upgrade with staggered fitment - with plus size on tires:
19X8.5 235/35/19
19X9.5 265/30/19
19 inch upgrade with staggered fitment - with plus plus size on tires:
19X8.5 245/35/19
19X9.5 275/30/19
01-24-19, 01:35 PM
#1551
This is a tire sizing guide I gave to someone else. As is states in the first 19 inch recommendation below, offset will be dependent on the manufacture.
I don't have one for 18's prepared as usually folks stay close to the OEM specs if they go with aftermarket 18's.
Stock F-Sport Wheel specs
18X8 +40 225/40/18
18X8.5 +50 255/35/18
19 inch upgrade with staggered fitment (to keep the exact same tire circumference as the stock 18 inch wheels - no offset as that is wheel manufacturer specific):
19X8.5 225/35/19
19X9.5 255/30/19
19 inch upgrade with staggered fitment - with plus size on tires:
19X8.5 235/35/19
19X9.5 265/30/19
19 inch upgrade with staggered fitment - with plus plus size on tires:
19X8.5 245/35/19
19X9.5 275/30/19
I don't have one for 18's prepared as usually folks stay close to the OEM specs if they go with aftermarket 18's.
Stock F-Sport Wheel specs
18X8 +40 225/40/18
18X8.5 +50 255/35/18
19 inch upgrade with staggered fitment (to keep the exact same tire circumference as the stock 18 inch wheels - no offset as that is wheel manufacturer specific):
19X8.5 225/35/19
19X9.5 255/30/19
19 inch upgrade with staggered fitment - with plus size on tires:
19X8.5 235/35/19
19X9.5 265/30/19
19 inch upgrade with staggered fitment - with plus plus size on tires:
19X8.5 245/35/19
19X9.5 275/30/19
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PGARazor (03-12-19)
01-24-19, 08:00 PM
#1552
01-27-19, 07:26 AM
#1553
Driver School Candidate
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Location: Ontario
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Wheel fitment
@lexi90
Hey, I know this post is old but I have a 2014 IS350 F Sport RWD lowered on super downs and I'm looking at getting 19s. Would you mind telling me what was your buddy's front set up with the 19x10 +42?
Thank you in advance,
Hafeez.
Hi,
I'm running 275/30-19 on a 19x10 +48 and I'm on Down Springs. My buddy is running 265/30-19 on a 19x10 +42 and he's on Super Down Springs. No rubbing for both of us! Most of us who own a 3IS run 30s on the rear to avoid rubbing issues, especially on lowered cars. I am not sure if it would be possible since you're on Downs, but you can always do an experiment and try. Let us know how you make out!
I'm running 275/30-19 on a 19x10 +48 and I'm on Down Springs. My buddy is running 265/30-19 on a 19x10 +42 and he's on Super Down Springs. No rubbing for both of us! Most of us who own a 3IS run 30s on the rear to avoid rubbing issues, especially on lowered cars. I am not sure if it would be possible since you're on Downs, but you can always do an experiment and try. Let us know how you make out!
Thank you in advance,
Hafeez.
Last edited by feezyh; 01-27-19 at 10:25 AM.
01-27-19, 09:58 AM
#1554
Lexus Test Driver
Join Date: Feb 2017
Location: Richmond Hill, Ontario, Canada
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If you edit your post and include the @ symbol followed immediately by the username, it will alert that member of your post...and likely they will respond quicker.
General answer to your question though, he was likely running a 19x8.5 or 9 with a 235/35/19 offset +30 to +35.
01-27-19, 10:35 AM
#1555
01-27-19, 03:39 PM
#1556
Lexus Champion
@lexi90
Hey, I know this post is old but I have a 2014 IS350 F Sport RWD lowered on super downs and I'm looking at getting 19s. Would you mind telling me what was your buddy's front set up with the 19x10 +42?
Thank you in advance,
Hafeez.
Hey, I know this post is old but I have a 2014 IS350 F Sport RWD lowered on super downs and I'm looking at getting 19s. Would you mind telling me what was your buddy's front set up with the 19x10 +42?
Thank you in advance,
Hafeez.
His setup was the following:
Front +38
Rear: +42
01-27-19, 04:09 PM
#1558
Lexus Champion
01-27-19, 07:53 PM
#1560
Lexus Champion
WedsSport SA72R