Offset question
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Driver School Candidate
Joined: Aug 2019
Posts: 19
Likes: 2
From: BC
Offset question
Hi I have tried to search and found most are running 235 and 265 tires so can't seem to find the answer I want.
I wanted to buy a set of rims for my car. I need help with the offsets. I want no rubbing at all.
I am lowered on RSR down Springs. I have a 2017 Lexus IS 350 AWD
Font tire size will be 225/35/19 (19*8.5)
Rear will be 255/30/19 (19 *9.5)
What offsets would help ensure I dont have any rubbing front and back?
I was looking at possibly +35 offset front and +42 offset back?
Or can I go lower say +32 F and +40 back?
I would like the alignment to be within factory specs and get the wheels as flush as possible but with no rubbing issues with passengers in the car etc.
Thanks!
I wanted to buy a set of rims for my car. I need help with the offsets. I want no rubbing at all.
I am lowered on RSR down Springs. I have a 2017 Lexus IS 350 AWD
Font tire size will be 225/35/19 (19*8.5)
Rear will be 255/30/19 (19 *9.5)
What offsets would help ensure I dont have any rubbing front and back?
I was looking at possibly +35 offset front and +42 offset back?
Or can I go lower say +32 F and +40 back?
I would like the alignment to be within factory specs and get the wheels as flush as possible but with no rubbing issues with passengers in the car etc.
Thanks!
Last edited by VanIS; Aug 26, 2019 at 12:53 PM. Reason: Spelling
Thread Starter
Driver School Candidate
Joined: Aug 2019
Posts: 19
Likes: 2
From: BC
Great thanks for that I was leaning towards that recommendation as you stated would give me the option of going up in tire size.
Only issue I have going to 235 and 265 is I am AWD and wanted to keep it at the same ratio (225 and 255) as the stock wheels so I would not create any issues with the AWD system. Not sure if going up a size to 235 and 265 effects this on the AWD system as well as the speedometer.
Sorry if any of this sounds stupid I am new to all of this and trying to learn.
Only issue I have going to 235 and 265 is I am AWD and wanted to keep it at the same ratio (225 and 255) as the stock wheels so I would not create any issues with the AWD system. Not sure if going up a size to 235 and 265 effects this on the AWD system as well as the speedometer.
Sorry if any of this sounds stupid I am new to all of this and trying to learn.
Lexus Test Driver
Joined: Feb 2017
Posts: 6,260
Likes: 1,752
From: Richmond Hill, Ontario, Canada
Once the front and rear tires are the same (or close as possible) circumference, then the AWD will be fine.
Also, the difference in 225/35 and 235/35 is only about 0.4 inches, so not that much bigger. The AWD drive really won't notice a difference.
If you went with the smaller tires, then you could do +32 front and +38 rear.
The larger tires will still fit with those offsets, but to be absolutely sure there's no rubbing, +35 front and +40 - +42 rear will be perfect.
Also, the difference in 225/35 and 235/35 is only about 0.4 inches, so not that much bigger. The AWD drive really won't notice a difference.
If you went with the smaller tires, then you could do +32 front and +38 rear.
The larger tires will still fit with those offsets, but to be absolutely sure there's no rubbing, +35 front and +40 - +42 rear will be perfect.
Driver
Joined: Jul 2018
Posts: 157
Likes: 18
From: VA
Great thanks for that I was leaning towards that recommendation as you stated would give me the option of going up in tire size.
Only issue I have going to 235 and 265 is I am AWD and wanted to keep it at the same ratio (225 and 255) as the stock wheels so I would not create any issues with the AWD system. Not sure if going up a size to 235 and 265 effects this on the AWD system as well as the speedometer.
Sorry if any of this sounds stupid I am new to all of this and trying to learn.
Only issue I have going to 235 and 265 is I am AWD and wanted to keep it at the same ratio (225 and 255) as the stock wheels so I would not create any issues with the AWD system. Not sure if going up a size to 235 and 265 effects this on the AWD system as well as the speedometer.
Sorry if any of this sounds stupid I am new to all of this and trying to learn.
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Thread Starter
Driver School Candidate
Joined: Aug 2019
Posts: 19
Likes: 2
From: BC
I didnt think about this and wouldn't want any stretch on the tires.
Given all this, I most liklely will go:
19*8.5 Front 235/35/19 +35
19*9.5 Rear 265/30/19 +42
This set up will allow for no rubbing as well as no tire stretch and still be conservative it appears from all the comments.
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Joined: Jan 2015
Posts: 610
Likes: 85
From: Michigan
I didnt think about this and wouldn't want any stretch on the tires.
Given all this, I most liklely will go:
19*8.5 Front 235/35/19 +35
19*9.5 Rear 265/30/19 +42
This set up will allow for no rubbing as well as no tire stretch and still be conservative it appears from all the comments.
Given all this, I most liklely will go:
19*8.5 Front 235/35/19 +35
19*9.5 Rear 265/30/19 +42
This set up will allow for no rubbing as well as no tire stretch and still be conservative it appears from all the comments.
19x10 +42 265-30
19x8.5 +32 235-35 AWD RSR Downs. No issues whatsoever just to show how “stretched “ your setup might look
Pole Position
Joined: Oct 2016
Posts: 306
Likes: 40
From: Ca
You should also consider wheel design for the front wheels when it comes to offset. When I got my wheels I went with a +35 offset because I didn’t want rubbing either but the wheels did not clear the brake calipers. I exchanged them with +30 offset and I have no rubbing with 225/35 tires. I’ll be moving up to 235s next time since I still have room
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Joined: Jan 2015
Posts: 610
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From: Michigan
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