OEM Safe
Within ±3%
Inside factory tolerance — ABS, ESP and cruise control stay calibrated.
Fitment comparison
145/55 R16versus175/70 R13
Δ Ø +9.3 mmSpeedo +1.64%OEM-safe
175/70 R13 stands taller than 145/55 R16 — bigger rolling diameter, slightly more clearance, calmer cruise revs.
Switching from 145/55 R16 to 175/70 R13 steps down to a 13-inch wheel — a familiar move for winter and dedicated all-terrain sets. This swap trims or stretches rolling diameter by a small margin. The taller sidewall adds cushioning over potholes and rougher roads, with a softer overall ride.
The speedometer offset is small but measurable; worth keeping in mind if you watch the dash closely. Diameter change stays inside the conservative ±3% safety window — an OEM-safe fitment on most vehicles.
TakePractical direction for winter wheels, chains, or rougher pavement where cushioning matters.
Quick fitment verdict
145/55 R16 → 175/70 R13 at a glance
Fender Clearance
Likely rubs
Significantly wider/taller — rubbing risk on liners or fender lip is real.
Speedometer Impact
+1.64%
At a true 100 km/h the dash reads 101.6 km/h — negligible.
Daily Driving
Livable
Daily use is fine; expect a slightly different ride and cruise rev count.
Side-by-side telemetry
Dimensional read-out
Current
145/55 R16
- Diameter
- 565.9 mm
- Sidewall
- 79.8 mm
- Wheel
- 16″
- Width
- 145 mm
Δ delta
Ø +9.3 mm
SW +42.8 mm
RH +4.7 mm
NewNew
175/70 R13
- Diameter
- 575.2 mm
- Sidewall
- 122.5 mm
- Wheel
- 13″
- Width
- 175 mm
Real-world effects
How this swap actually feels
- Steering response4/100 · Softer turn-in
- Ride comfort100/100 · More cushion
- Fuel economy31/100 · Slightly higher drag
- Highway cruising66/100 · Lower cruise revs
- Pothole resistance100/100 · More wheel protection
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Ride height
Lifted stance
Chassis sits higher — slightly more clearance, wheel-gap visually grows.
New tire lifts the chassis by ~4.7 mm — more clearance, slightly more wheel-gap.
Suspension travel · arch clearance
Wheel gap
Wheel gap visually increases
How the arch-to-tire gap reads from across the parking lot — the visual stance change everyone notices first.
145/55 R16
175/70 R13
Wheel-gap Δ+4.7 mm
Static · unloaded chassis
Fender relationship
Tucked · Flush · Poke
The visual relationship between the tire's outer edge and the fender lip — the lens enthusiasts use to judge a fitment.
Tucked
Inside fender
Flush
Lip-aligned
Poke
Outside fender
Width & offset dependent
Speedometer reality
Dash reads 101.6 km/h
Taller rubber: at a true 100 km/h your dashboard reads optimistically high.
ABS · ESP · cruise control
Setup telemetry
How this setup changes the car
Driver-perspective read-out of the 145/55 R16 → 175/70 R13 swap — steering, comfort, stance and dash behavior in plain enthusiast language.
Steering feel
+42.8 mm sidewallSofter, more relaxed turn-in
Taller sidewall flexes a touch more before loading the contact patch — calmer, comfort-tuned.
Ride firmness
55% → 70%Softer over potholes and joints
Bumps and expansion joints are absorbed better — a comfort win for daily driving.
Fender relationship
+30 mm widthWheel sits closer to the fender
Wider tire pushes the contact patch outboard — flusher stance, but verify fender lip clearance at full lock.
Speedometer behavior
+1.64%OEM-safe speedometer reading
Inside the factory ±3% tolerance — ABS, ESP and cruise control behave as designed.
Daily drivability
Ø +9.3 mmLivable upgrade with minor trade-offs
Daily use is fine; expect a slightly different cruise rev count and a touch more road feel.
Direct answer
Is 175/70 R13 OEM-safe?
Yes. Overall diameter changes by +1.64% versus 145/55 R16. OEM-safe. Speedometer, ABS, ESP and gearing remain inside the factory tolerance.
Direct answer
Will 175/70 R13 rub?
Possibly. Width changes by +30 mm and diameter by +9.3 mm. Possible rub at full lock or full suspension compression — verify fender lip and inner strut clearance before committing.
Direct answer
Does the speedometer change?
Yes — by +1.64%. Swapping 145/55 R16 for 175/70 R13 changes overall diameter, so at an indicated 100 km/h your true speed becomes 101.6 km/h. That's within the ±3% OEM tolerance — no recalibration needed.
Direct answer
Does lower sidewall affect comfort?
Yes — softer ride. Sidewall changes by +42.8 mm (55% → 70%). Ride softens and absorbs bumps better, with slightly less precise turn-in.
Current Tire
145/55R16
New Tire
175/70R13
Fitment · Scaled comparison
● Excellent fit
145/55 R16
Diameter
+9.3 mm
+1.64%
Sidewall
+42.8 mm
Speedometer
101.6 km/h
at true 100
Clearance
Excellent fit
175/70 R13
Ground line · Scaled comparison
Excellent Fit
Within ±3% — safe for daily driving
Diameter change
+9.3 mm
1.64%
Speedometer at 100
101.6 km/h
+1.64% error
Ground clearance
+4.7 mm
ride height delta
Sidewall change
+42.8 mm
revs/km: 553.4
Permalink for this comparison:
/compare/145-55-r16-vs-175-70-r13Detailed comparison
| Metric | 145/55 R16 | 175/70 R13 | Difference |
|---|---|---|---|
| Overall diameter | 565.9 mm | 575.2 mm | +9.3 mm (+1.64%) |
| Sidewall height | 79.8 mm | 122.5 mm | +42.8 mm |
| Circumference | 1.778 m | 1.807 m | +29.2 mm |
| Revs / km | 562.5 | 553.4 | -9.1 |
| Ground clearance | reference | +4.7 mm | +4.7 mm |
| Speedometer @ 100 km/h | 100.0 km/h | 101.6 km/h | +1.64 km/h |
Verdict: excellent
Within ±3% — speedometer, ABS and traction control should behave normally.
Dimensional comparison
Side-by-sideScaled engineering side-profile of both tires. Width, sidewall and overall diameter are dimensioned so you can see the change at a glance — without parsing the numbers.
Current
145/55 R16- Profile
- 55%
- Circumference
- 1.778 m
New
175/70 R13- Profile
- 70%
- Circumference
- 1.807 m
Side-by-side fitment
GeometryCurrent
145/55 R16- Section width
- 145 mm
- Aspect ratio
- 55%
- Sidewall
- 79.8 mm
- Wheel diameter
- 16″(406 mm)
- Overall diameter
- 565.9 mm(22.28″)
- Circumference
- 1.778 m
- Revs / km
- 562.5
New
175/70 R13- Section width
- 175 mm
- Aspect ratio
- 70%
- Sidewall
- 122.5 mm
- Wheel diameter
- 13″(330 mm)
- Overall diameter
- 575.2 mm(22.65″)
- Circumference
- 1.807 m
- Revs / km
- 553.4
Real-world consequences
Pros / consWider tire (+30 mm)
Section width- More dry grip and cornering bite
- Sharper steering response on initial turn-in
- Bigger contact patch under braking
- More road noise on coarse asphalt
- Worse aquaplaning resistance in standing water
- Higher rolling resistance, small MPG hit
- Possible fender or strut contact at full lock
Taller sidewall (+15% aspect)
Sidewall- Plusher ride, better pothole and curb protection
- More forgiving on bad roads and trails
- Lower wheel-damage risk on impacts
- More sidewall flex, softer steering feel
- Slightly delayed turn-in response
Taller overall (+9.3 mm)
Rolling diameter- Higher ground clearance and approach angle
- Longer effective gearing — calmer highway revs
- Bigger contact patch lengthwise
- Speedometer reads low by ~1.6%
- Reduced fender, strut and bumpstop clearance
- Slower 0-60, more downshifts under load
-3″ rim downsize
Wheel diameter- Cheaper winter / track tire sizing
- Lighter overall package, less unsprung mass
- More sidewall = more impact absorption
- Less aggressive stance
- Possible brake caliper clearance issue going too small
How it changes driving feel
Seat-of-the-pantsSteering response
Similar feel
Ride comfort
Plusher ride
Road noise
Louder on coarse asphalt
Wet / aquaplaning
Reduced standing-water margin
Fuel economy
Small MPG penalty likely
Curb / pothole protection
More sidewall, more cushion
Fitment risk check
Verify before installFender rubbing
Width jump >20 mm — verify fender lip and inner liner clearance at full lock.
Suspension clearance
Wider tire may contact strut or control arm on full compression.
Cluster preview
Within toleranceSpeedometer impact
At a true 100 km/h, your dashboard will read 101.6 km/h after switching to 175/70 R13 — a +1.64% offset. Use the speedometer error calculator for any indicated speed, and the speedometer error guide for the full background.
Ground clearance change
The new tire's half-diameter changes ride height by +4.7 mm. Small differences are absorbed by suspension travel, but anything beyond ±10 mm can affect headlight aim, fender clearance and bump-stop margin. See the plus-sizing guide before committing.
Back to
145/55 R16
Back to
175/70 R13
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